diff --git a/.gitignore b/.gitignore
index cc9e9e11..de45de3d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,4 +29,6 @@ docs/source/tutorials/aave.json
 contracts/aave-v3-deploy/hardhat-deployment-export.json
 
 # pyenv local
-.python-version
\ No newline at end of file
+.python-version
+
+contracts/lagoon-v0
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12d8105d..7478b724 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+# Current
+
+- Add Multicall3 support in `multicall_batcher` module
+- Add `SwapRouter02` support on Base for doing Uniswap v3 swaps
+- Add Uniswap V3 quoter for the valuation
+- Add `buy_tokens()` helper to buy multiple tokens once, automatically look up best routes
+
 # 0.27
 
 - Add: Support for [Velvet Capital vaults](https://www.velvet.capital/)
diff --git a/eth_defi/abi.py b/eth_defi/abi.py
index 5d8e2a32..e3e914aa 100644
--- a/eth_defi/abi.py
+++ b/eth_defi/abi.py
@@ -11,7 +11,7 @@
 import re
 from functools import lru_cache
 from pathlib import Path
-from typing import Optional, Sequence, Type, Union
+from typing import Optional, Sequence, Type, Union, Any
 
 import eth_abi
 from eth_abi import decode
@@ -27,12 +27,20 @@
 # Cache loaded ABI files in-process memory for speedup
 from web3.datastructures import AttributeDict
 
-from eth_defi.utils import ZERO_ADDRESS_STR
-
 # How big are our ABI and contract caches
 _CACHE_SIZE = 512
 
 
+#: Ethereum 0x0000000000000000000000000000000000000000 address as a string.
+#:
+#: Legacy. Use one below.
+#:
+ZERO_ADDRESS_STR = "0x0000000000000000000000000000000000000000"
+
+#: Ethereum 0x0000000000000000000000000000000000000000 address
+ZERO_ADDRESS = ZERO_ADDRESS_STR
+
+
 @lru_cache(maxsize=_CACHE_SIZE)
 def get_abi_by_filename(fname: str) -> dict:
     """Reads a embedded ABI file and returns it.
@@ -288,6 +296,34 @@ def encode_function_args(func: ContractFunction, args: Sequence) -> bytes:
     return encoded_args
 
 
+def decode_function_output(func: ContractFunction, data: bytes) -> Any:
+    """Decode raw return value of Solidity function using Contract proxy object.
+
+    Uses `web3.Contract.functions` prepared function as the ABI source.
+
+    :param func:
+        Function which arguments we are going to encode.
+
+        Must be bound.
+
+    :param result:
+        Raw encoded Solidity bytes.
+    """
+    assert isinstance(func, ContractFunction)
+
+    web3 = func.w3
+
+    fn_abi, fn_selector, aligned_fn_arguments = get_function_info(
+        func.fn_name,
+        web3.codec,
+        func.contract_abi,
+        args=func.args,
+    )
+    arg_types = [t["type"] for t in fn_abi["outputs"]]
+    decoded_out = eth_abi.decode(arg_types, data)
+    return decoded_out
+
+
 def encode_function_call(
     func: ContractFunction,
     args: Sequence,
@@ -320,7 +356,10 @@ def encode_function_call(
         fn_abi,
         args,
     )
-    encoded = encode_abi(w3, fn_abi, fn_arguments, fn_selector)
+    try:
+        encoded = encode_abi(w3, fn_abi, fn_arguments, fn_selector)
+    except Exception as e:
+        raise RuntimeError(f"Could not encode ABI: {fn_abi}, args: {fn_arguments}") from e
     return HexBytes(encoded)
 
 
@@ -464,3 +503,4 @@ def get_function_selector(func: ContractFunction) -> bytes:
     function_signature = _abi_to_signature(fn_abi)
     fn_selector = function_signature_to_4byte_selector(function_signature)  # type: ignore
     return fn_selector
+
diff --git a/eth_defi/abi/multicall/IMulticall3.json b/eth_defi/abi/multicall/IMulticall3.json
new file mode 100644
index 00000000..9a449560
--- /dev/null
+++ b/eth_defi/abi/multicall/IMulticall3.json
@@ -0,0 +1 @@
+{"abi":[{"type":"function","name":"aggregate","inputs":[{"name":"calls","type":"tuple[]","internalType":"struct IMulticall3.Call[]","components":[{"name":"target","type":"address","internalType":"address"},{"name":"callData","type":"bytes","internalType":"bytes"}]}],"outputs":[{"name":"blockNumber","type":"uint256","internalType":"uint256"},{"name":"returnData","type":"bytes[]","internalType":"bytes[]"}],"stateMutability":"payable"},{"type":"function","name":"aggregate3","inputs":[{"name":"calls","type":"tuple[]","internalType":"struct IMulticall3.Call3[]","components":[{"name":"target","type":"address","internalType":"address"},{"name":"allowFailure","type":"bool","internalType":"bool"},{"name":"callData","type":"bytes","internalType":"bytes"}]}],"outputs":[{"name":"returnData","type":"tuple[]","internalType":"struct IMulticall3.Result[]","components":[{"name":"success","type":"bool","internalType":"bool"},{"name":"returnData","type":"bytes","internalType":"bytes"}]}],"stateMutability":"payable"},{"type":"function","name":"aggregate3Value","inputs":[{"name":"calls","type":"tuple[]","internalType":"struct IMulticall3.Call3Value[]","components":[{"name":"target","type":"address","internalType":"address"},{"name":"allowFailure","type":"bool","internalType":"bool"},{"name":"value","type":"uint256","internalType":"uint256"},{"name":"callData","type":"bytes","internalType":"bytes"}]}],"outputs":[{"name":"returnData","type":"tuple[]","internalType":"struct IMulticall3.Result[]","components":[{"name":"success","type":"bool","internalType":"bool"},{"name":"returnData","type":"bytes","internalType":"bytes"}]}],"stateMutability":"payable"},{"type":"function","name":"blockAndAggregate","inputs":[{"name":"calls","type":"tuple[]","internalType":"struct IMulticall3.Call[]","components":[{"name":"target","type":"address","internalType":"address"},{"name":"callData","type":"bytes","internalType":"bytes"}]}],"outputs":[{"name":"blockNumber","type":"uint256","internalType":"uint256"},{"name":"blockHash","type":"bytes32","internalType":"bytes32"},{"name":"returnData","type":"tuple[]","internalType":"struct IMulticall3.Result[]","components":[{"name":"success","type":"bool","internalType":"bool"},{"name":"returnData","type":"bytes","internalType":"bytes"}]}],"stateMutability":"payable"},{"type":"function","name":"getBasefee","inputs":[],"outputs":[{"name":"basefee","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getBlockHash","inputs":[{"name":"blockNumber","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"blockHash","type":"bytes32","internalType":"bytes32"}],"stateMutability":"view"},{"type":"function","name":"getBlockNumber","inputs":[],"outputs":[{"name":"blockNumber","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getChainId","inputs":[],"outputs":[{"name":"chainid","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getCurrentBlockCoinbase","inputs":[],"outputs":[{"name":"coinbase","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"getCurrentBlockDifficulty","inputs":[],"outputs":[{"name":"difficulty","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getCurrentBlockGasLimit","inputs":[],"outputs":[{"name":"gaslimit","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getCurrentBlockTimestamp","inputs":[],"outputs":[{"name":"timestamp","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getEthBalance","inputs":[{"name":"addr","type":"address","internalType":"address"}],"outputs":[{"name":"balance","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getLastBlockHash","inputs":[],"outputs":[{"name":"blockHash","type":"bytes32","internalType":"bytes32"}],"stateMutability":"view"},{"type":"function","name":"tryAggregate","inputs":[{"name":"requireSuccess","type":"bool","internalType":"bool"},{"name":"calls","type":"tuple[]","internalType":"struct IMulticall3.Call[]","components":[{"name":"target","type":"address","internalType":"address"},{"name":"callData","type":"bytes","internalType":"bytes"}]}],"outputs":[{"name":"returnData","type":"tuple[]","internalType":"struct IMulticall3.Result[]","components":[{"name":"success","type":"bool","internalType":"bool"},{"name":"returnData","type":"bytes","internalType":"bytes"}]}],"stateMutability":"payable"},{"type":"function","name":"tryBlockAndAggregate","inputs":[{"name":"requireSuccess","type":"bool","internalType":"bool"},{"name":"calls","type":"tuple[]","internalType":"struct IMulticall3.Call[]","components":[{"name":"target","type":"address","internalType":"address"},{"name":"callData","type":"bytes","internalType":"bytes"}]}],"outputs":[{"name":"blockNumber","type":"uint256","internalType":"uint256"},{"name":"blockHash","type":"bytes32","internalType":"bytes32"},{"name":"returnData","type":"tuple[]","internalType":"struct IMulticall3.Result[]","components":[{"name":"success","type":"bool","internalType":"bool"},{"name":"returnData","type":"bytes","internalType":"bytes"}]}],"stateMutability":"payable"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"aggregate((address,bytes)[])":"252dba42","aggregate3((address,bool,bytes)[])":"82ad56cb","aggregate3Value((address,bool,uint256,bytes)[])":"174dea71","blockAndAggregate((address,bytes)[])":"c3077fa9","getBasefee()":"3e64a696","getBlockHash(uint256)":"ee82ac5e","getBlockNumber()":"42cbb15c","getChainId()":"3408e470","getCurrentBlockCoinbase()":"a8b0574e","getCurrentBlockDifficulty()":"72425d9d","getCurrentBlockGasLimit()":"86d516e8","getCurrentBlockTimestamp()":"0f28c97d","getEthBalance(address)":"4d2301cc","getLastBlockHash()":"27e86d6e","tryAggregate(bool,(address,bytes)[])":"bce38bd7","tryBlockAndAggregate(bool,(address,bytes)[])":"399542e9"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.12+commit.f00d7308\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"callData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Call[]\",\"name\":\"calls\",\"type\":\"tuple[]\"}],\"name\":\"aggregate\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"blockNumber\",\"type\":\"uint256\"},{\"internalType\":\"bytes[]\",\"name\":\"returnData\",\"type\":\"bytes[]\"}],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"allowFailure\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"callData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Call3[]\",\"name\":\"calls\",\"type\":\"tuple[]\"}],\"name\":\"aggregate3\",\"outputs\":[{\"components\":[{\"internalType\":\"bool\",\"name\":\"success\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"returnData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Result[]\",\"name\":\"returnData\",\"type\":\"tuple[]\"}],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"allowFailure\",\"type\":\"bool\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"callData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Call3Value[]\",\"name\":\"calls\",\"type\":\"tuple[]\"}],\"name\":\"aggregate3Value\",\"outputs\":[{\"components\":[{\"internalType\":\"bool\",\"name\":\"success\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"returnData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Result[]\",\"name\":\"returnData\",\"type\":\"tuple[]\"}],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"callData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Call[]\",\"name\":\"calls\",\"type\":\"tuple[]\"}],\"name\":\"blockAndAggregate\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"blockNumber\",\"type\":\"uint256\"},{\"internalType\":\"bytes32\",\"name\":\"blockHash\",\"type\":\"bytes32\"},{\"components\":[{\"internalType\":\"bool\",\"name\":\"success\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"returnData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Result[]\",\"name\":\"returnData\",\"type\":\"tuple[]\"}],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getBasefee\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"basefee\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"blockNumber\",\"type\":\"uint256\"}],\"name\":\"getBlockHash\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"blockHash\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getBlockNumber\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"blockNumber\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getChainId\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"chainid\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getCurrentBlockCoinbase\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"coinbase\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getCurrentBlockDifficulty\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"difficulty\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getCurrentBlockGasLimit\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"gaslimit\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getCurrentBlockTimestamp\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"timestamp\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"addr\",\"type\":\"address\"}],\"name\":\"getEthBalance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getLastBlockHash\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"blockHash\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bool\",\"name\":\"requireSuccess\",\"type\":\"bool\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"callData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Call[]\",\"name\":\"calls\",\"type\":\"tuple[]\"}],\"name\":\"tryAggregate\",\"outputs\":[{\"components\":[{\"internalType\":\"bool\",\"name\":\"success\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"returnData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Result[]\",\"name\":\"returnData\",\"type\":\"tuple[]\"}],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bool\",\"name\":\"requireSuccess\",\"type\":\"bool\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"callData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Call[]\",\"name\":\"calls\",\"type\":\"tuple[]\"}],\"name\":\"tryBlockAndAggregate\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"blockNumber\",\"type\":\"uint256\"},{\"internalType\":\"bytes32\",\"name\":\"blockHash\",\"type\":\"bytes32\"},{\"components\":[{\"internalType\":\"bool\",\"name\":\"success\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"returnData\",\"type\":\"bytes\"}],\"internalType\":\"struct IMulticall3.Result[]\",\"name\":\"returnData\",\"type\":\"tuple[]\"}],\"stateMutability\":\"payable\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/interfaces/IMulticall3.sol\":\"IMulticall3\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":10000000},\"remappings\":[\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":forge-std/=lib/forge-std/src/\"]},\"sources\":{\"src/interfaces/IMulticall3.sol\":{\"keccak256\":\"0x9a8117c426e1265aaf9f523c284c1caf63bd1568e4d6b379d80c9ac214c539b4\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://e35ffef4b3a96f8f0d3f6f4d7256b9c5f890b6e7c861f4f64b7b95eebf137541\",\"dweb:/ipfs/QmPWjRA3PwphJeq4QEHsXqsazfpPRYSjFb5tKx87ZXGsPk\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.12+commit.f00d7308"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"struct IMulticall3.Call[]","name":"calls","type":"tuple[]","components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"}]}],"stateMutability":"payable","type":"function","name":"aggregate","outputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"},{"internalType":"bytes[]","name":"returnData","type":"bytes[]"}]},{"inputs":[{"internalType":"struct IMulticall3.Call3[]","name":"calls","type":"tuple[]","components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bool","name":"allowFailure","type":"bool"},{"internalType":"bytes","name":"callData","type":"bytes"}]}],"stateMutability":"payable","type":"function","name":"aggregate3","outputs":[{"internalType":"struct IMulticall3.Result[]","name":"returnData","type":"tuple[]","components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"returnData","type":"bytes"}]}]},{"inputs":[{"internalType":"struct IMulticall3.Call3Value[]","name":"calls","type":"tuple[]","components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bool","name":"allowFailure","type":"bool"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"callData","type":"bytes"}]}],"stateMutability":"payable","type":"function","name":"aggregate3Value","outputs":[{"internalType":"struct IMulticall3.Result[]","name":"returnData","type":"tuple[]","components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"returnData","type":"bytes"}]}]},{"inputs":[{"internalType":"struct IMulticall3.Call[]","name":"calls","type":"tuple[]","components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"}]}],"stateMutability":"payable","type":"function","name":"blockAndAggregate","outputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"},{"internalType":"bytes32","name":"blockHash","type":"bytes32"},{"internalType":"struct IMulticall3.Result[]","name":"returnData","type":"tuple[]","components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"returnData","type":"bytes"}]}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getBasefee","outputs":[{"internalType":"uint256","name":"basefee","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}],"stateMutability":"view","type":"function","name":"getBlockHash","outputs":[{"internalType":"bytes32","name":"blockHash","type":"bytes32"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getBlockNumber","outputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getChainId","outputs":[{"internalType":"uint256","name":"chainid","type":"uint256"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getCurrentBlockCoinbase","outputs":[{"internalType":"address","name":"coinbase","type":"address"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getCurrentBlockDifficulty","outputs":[{"internalType":"uint256","name":"difficulty","type":"uint256"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getCurrentBlockGasLimit","outputs":[{"internalType":"uint256","name":"gaslimit","type":"uint256"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getCurrentBlockTimestamp","outputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"}]},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"stateMutability":"view","type":"function","name":"getEthBalance","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"getLastBlockHash","outputs":[{"internalType":"bytes32","name":"blockHash","type":"bytes32"}]},{"inputs":[{"internalType":"bool","name":"requireSuccess","type":"bool"},{"internalType":"struct IMulticall3.Call[]","name":"calls","type":"tuple[]","components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"}]}],"stateMutability":"payable","type":"function","name":"tryAggregate","outputs":[{"internalType":"struct IMulticall3.Result[]","name":"returnData","type":"tuple[]","components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"returnData","type":"bytes"}]}]},{"inputs":[{"internalType":"bool","name":"requireSuccess","type":"bool"},{"internalType":"struct IMulticall3.Call[]","name":"calls","type":"tuple[]","components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"}]}],"stateMutability":"payable","type":"function","name":"tryBlockAndAggregate","outputs":[{"internalType":"uint256","name":"blockNumber","type":"uint256"},{"internalType":"bytes32","name":"blockHash","type":"bytes32"},{"internalType":"struct IMulticall3.Result[]","name":"returnData","type":"tuple[]","components":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"returnData","type":"bytes"}]}]}],"devdoc":{"kind":"dev","methods":{},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["ds-test/=lib/forge-std/lib/ds-test/src/","forge-std/=lib/forge-std/src/"],"optimizer":{"enabled":true,"runs":10000000},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/interfaces/IMulticall3.sol":"IMulticall3"},"evmVersion":"london","libraries":{}},"sources":{"src/interfaces/IMulticall3.sol":{"keccak256":"0x9a8117c426e1265aaf9f523c284c1caf63bd1568e4d6b379d80c9ac214c539b4","urls":["bzz-raw://e35ffef4b3a96f8f0d3f6f4d7256b9c5f890b6e7c861f4f64b7b95eebf137541","dweb:/ipfs/QmPWjRA3PwphJeq4QEHsXqsazfpPRYSjFb5tKx87ZXGsPk"],"license":"MIT"}},"version":1},"id":22}
\ No newline at end of file
diff --git a/eth_defi/abi/multicall/multicall3.json b/eth_defi/abi/multicall/multicall3.json
new file mode 100644
index 00000000..bcd2dbb9
--- /dev/null
+++ b/eth_defi/abi/multicall/multicall3.json
@@ -0,0 +1,440 @@
+{"abi": [
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "target",
+              "type": "address"
+            },
+            {
+              "internalType": "bytes",
+              "name": "callData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Call[]",
+          "name": "calls",
+          "type": "tuple[]"
+        }
+      ],
+      "name": "aggregate",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "blockNumber",
+          "type": "uint256"
+        },
+        {
+          "internalType": "bytes[]",
+          "name": "returnData",
+          "type": "bytes[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "target",
+              "type": "address"
+            },
+            {
+              "internalType": "bool",
+              "name": "allowFailure",
+              "type": "bool"
+            },
+            {
+              "internalType": "bytes",
+              "name": "callData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Call3[]",
+          "name": "calls",
+          "type": "tuple[]"
+        }
+      ],
+      "name": "aggregate3",
+      "outputs": [
+        {
+          "components": [
+            {
+              "internalType": "bool",
+              "name": "success",
+              "type": "bool"
+            },
+            {
+              "internalType": "bytes",
+              "name": "returnData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Result[]",
+          "name": "returnData",
+          "type": "tuple[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "target",
+              "type": "address"
+            },
+            {
+              "internalType": "bool",
+              "name": "allowFailure",
+              "type": "bool"
+            },
+            {
+              "internalType": "uint256",
+              "name": "value",
+              "type": "uint256"
+            },
+            {
+              "internalType": "bytes",
+              "name": "callData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Call3Value[]",
+          "name": "calls",
+          "type": "tuple[]"
+        }
+      ],
+      "name": "aggregate3Value",
+      "outputs": [
+        {
+          "components": [
+            {
+              "internalType": "bool",
+              "name": "success",
+              "type": "bool"
+            },
+            {
+              "internalType": "bytes",
+              "name": "returnData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Result[]",
+          "name": "returnData",
+          "type": "tuple[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "target",
+              "type": "address"
+            },
+            {
+              "internalType": "bytes",
+              "name": "callData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Call[]",
+          "name": "calls",
+          "type": "tuple[]"
+        }
+      ],
+      "name": "blockAndAggregate",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "blockNumber",
+          "type": "uint256"
+        },
+        {
+          "internalType": "bytes32",
+          "name": "blockHash",
+          "type": "bytes32"
+        },
+        {
+          "components": [
+            {
+              "internalType": "bool",
+              "name": "success",
+              "type": "bool"
+            },
+            {
+              "internalType": "bytes",
+              "name": "returnData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Result[]",
+          "name": "returnData",
+          "type": "tuple[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getBasefee",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "basefee",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "blockNumber",
+          "type": "uint256"
+        }
+      ],
+      "name": "getBlockHash",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "blockHash",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getBlockNumber",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "blockNumber",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getChainId",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "chainid",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getCurrentBlockCoinbase",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "coinbase",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getCurrentBlockDifficulty",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "difficulty",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getCurrentBlockGasLimit",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "gaslimit",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getCurrentBlockTimestamp",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "timestamp",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "addr",
+          "type": "address"
+        }
+      ],
+      "name": "getEthBalance",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "balance",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "getLastBlockHash",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "blockHash",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bool",
+          "name": "requireSuccess",
+          "type": "bool"
+        },
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "target",
+              "type": "address"
+            },
+            {
+              "internalType": "bytes",
+              "name": "callData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Call[]",
+          "name": "calls",
+          "type": "tuple[]"
+        }
+      ],
+      "name": "tryAggregate",
+      "outputs": [
+        {
+          "components": [
+            {
+              "internalType": "bool",
+              "name": "success",
+              "type": "bool"
+            },
+            {
+              "internalType": "bytes",
+              "name": "returnData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Result[]",
+          "name": "returnData",
+          "type": "tuple[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bool",
+          "name": "requireSuccess",
+          "type": "bool"
+        },
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "target",
+              "type": "address"
+            },
+            {
+              "internalType": "bytes",
+              "name": "callData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Call[]",
+          "name": "calls",
+          "type": "tuple[]"
+        }
+      ],
+      "name": "tryBlockAndAggregate",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "blockNumber",
+          "type": "uint256"
+        },
+        {
+          "internalType": "bytes32",
+          "name": "blockHash",
+          "type": "bytes32"
+        },
+        {
+          "components": [
+            {
+              "internalType": "bool",
+              "name": "success",
+              "type": "bool"
+            },
+            {
+              "internalType": "bytes",
+              "name": "returnData",
+              "type": "bytes"
+            }
+          ],
+          "internalType": "struct Multicall3.Result[]",
+          "name": "returnData",
+          "type": "tuple[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    }
+  ]}
\ No newline at end of file
diff --git a/eth_defi/abi/uniswap-swap-contracts/README.md b/eth_defi/abi/uniswap-swap-contracts/README.md
new file mode 100644
index 00000000..aaafc53a
--- /dev/null
+++ b/eth_defi/abi/uniswap-swap-contracts/README.md
@@ -0,0 +1,5 @@
+Added here so that SwapRouter02 can be deployed on Base.
+
+See
+
+- https://github.com/tradingstrategy-ai/swap-router-contracts
\ No newline at end of file
diff --git a/eth_defi/abi/uniswap-swap-contracts/SwapRouter02.json b/eth_defi/abi/uniswap-swap-contracts/SwapRouter02.json
new file mode 100644
index 00000000..9fe8a2e3
--- /dev/null
+++ b/eth_defi/abi/uniswap-swap-contracts/SwapRouter02.json
@@ -0,0 +1,1072 @@
+{
+  "_format": "hh-sol-artifact-1",
+  "contractName": "SwapRouter02",
+  "sourceName": "contracts/SwapRouter02.sol",
+  "abi": [
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "_factoryV2",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "factoryV3",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "_positionManager",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "_WETH9",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "constructor"
+    },
+    {
+      "inputs": [],
+      "name": "WETH9",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
+        }
+      ],
+      "name": "approveMax",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
+        }
+      ],
+      "name": "approveMaxMinusOne",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
+        }
+      ],
+      "name": "approveZeroThenMax",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
+        }
+      ],
+      "name": "approveZeroThenMaxMinusOne",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes",
+          "name": "data",
+          "type": "bytes"
+        }
+      ],
+      "name": "callPositionManager",
+      "outputs": [
+        {
+          "internalType": "bytes",
+          "name": "result",
+          "type": "bytes"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes[]",
+          "name": "paths",
+          "type": "bytes[]"
+        },
+        {
+          "internalType": "uint128[]",
+          "name": "amounts",
+          "type": "uint128[]"
+        },
+        {
+          "internalType": "uint24",
+          "name": "maximumTickDivergence",
+          "type": "uint24"
+        },
+        {
+          "internalType": "uint32",
+          "name": "secondsAgo",
+          "type": "uint32"
+        }
+      ],
+      "name": "checkOracleSlippage",
+      "outputs": [],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes",
+          "name": "path",
+          "type": "bytes"
+        },
+        {
+          "internalType": "uint24",
+          "name": "maximumTickDivergence",
+          "type": "uint24"
+        },
+        {
+          "internalType": "uint32",
+          "name": "secondsAgo",
+          "type": "uint32"
+        }
+      ],
+      "name": "checkOracleSlippage",
+      "outputs": [],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "bytes",
+              "name": "path",
+              "type": "bytes"
+            },
+            {
+              "internalType": "address",
+              "name": "recipient",
+              "type": "address"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountIn",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountOutMinimum",
+              "type": "uint256"
+            }
+          ],
+          "internalType": "struct IV3SwapRouter.ExactInputParams",
+          "name": "params",
+          "type": "tuple"
+        }
+      ],
+      "name": "exactInput",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountOut",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "tokenIn",
+              "type": "address"
+            },
+            {
+              "internalType": "address",
+              "name": "tokenOut",
+              "type": "address"
+            },
+            {
+              "internalType": "uint24",
+              "name": "fee",
+              "type": "uint24"
+            },
+            {
+              "internalType": "address",
+              "name": "recipient",
+              "type": "address"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountIn",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountOutMinimum",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint160",
+              "name": "sqrtPriceLimitX96",
+              "type": "uint160"
+            }
+          ],
+          "internalType": "struct IV3SwapRouter.ExactInputSingleParams",
+          "name": "params",
+          "type": "tuple"
+        }
+      ],
+      "name": "exactInputSingle",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountOut",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "bytes",
+              "name": "path",
+              "type": "bytes"
+            },
+            {
+              "internalType": "address",
+              "name": "recipient",
+              "type": "address"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountOut",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountInMaximum",
+              "type": "uint256"
+            }
+          ],
+          "internalType": "struct IV3SwapRouter.ExactOutputParams",
+          "name": "params",
+          "type": "tuple"
+        }
+      ],
+      "name": "exactOutput",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountIn",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "tokenIn",
+              "type": "address"
+            },
+            {
+              "internalType": "address",
+              "name": "tokenOut",
+              "type": "address"
+            },
+            {
+              "internalType": "uint24",
+              "name": "fee",
+              "type": "uint24"
+            },
+            {
+              "internalType": "address",
+              "name": "recipient",
+              "type": "address"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountOut",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amountInMaximum",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint160",
+              "name": "sqrtPriceLimitX96",
+              "type": "uint160"
+            }
+          ],
+          "internalType": "struct IV3SwapRouter.ExactOutputSingleParams",
+          "name": "params",
+          "type": "tuple"
+        }
+      ],
+      "name": "exactOutputSingle",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountIn",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "factory",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "factoryV2",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "getApprovalType",
+      "outputs": [
+        {
+          "internalType": "enum IApproveAndCall.ApprovalType",
+          "name": "",
+          "type": "uint8"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "token0",
+              "type": "address"
+            },
+            {
+              "internalType": "address",
+              "name": "token1",
+              "type": "address"
+            },
+            {
+              "internalType": "uint256",
+              "name": "tokenId",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amount0Min",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amount1Min",
+              "type": "uint256"
+            }
+          ],
+          "internalType": "struct IApproveAndCall.IncreaseLiquidityParams",
+          "name": "params",
+          "type": "tuple"
+        }
+      ],
+      "name": "increaseLiquidity",
+      "outputs": [
+        {
+          "internalType": "bytes",
+          "name": "result",
+          "type": "bytes"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "components": [
+            {
+              "internalType": "address",
+              "name": "token0",
+              "type": "address"
+            },
+            {
+              "internalType": "address",
+              "name": "token1",
+              "type": "address"
+            },
+            {
+              "internalType": "uint24",
+              "name": "fee",
+              "type": "uint24"
+            },
+            {
+              "internalType": "int24",
+              "name": "tickLower",
+              "type": "int24"
+            },
+            {
+              "internalType": "int24",
+              "name": "tickUpper",
+              "type": "int24"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amount0Min",
+              "type": "uint256"
+            },
+            {
+              "internalType": "uint256",
+              "name": "amount1Min",
+              "type": "uint256"
+            },
+            {
+              "internalType": "address",
+              "name": "recipient",
+              "type": "address"
+            }
+          ],
+          "internalType": "struct IApproveAndCall.MintParams",
+          "name": "params",
+          "type": "tuple"
+        }
+      ],
+      "name": "mint",
+      "outputs": [
+        {
+          "internalType": "bytes",
+          "name": "result",
+          "type": "bytes"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "previousBlockhash",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "bytes[]",
+          "name": "data",
+          "type": "bytes[]"
+        }
+      ],
+      "name": "multicall",
+      "outputs": [
+        {
+          "internalType": "bytes[]",
+          "name": "",
+          "type": "bytes[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "deadline",
+          "type": "uint256"
+        },
+        {
+          "internalType": "bytes[]",
+          "name": "data",
+          "type": "bytes[]"
+        }
+      ],
+      "name": "multicall",
+      "outputs": [
+        {
+          "internalType": "bytes[]",
+          "name": "",
+          "type": "bytes[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes[]",
+          "name": "data",
+          "type": "bytes[]"
+        }
+      ],
+      "name": "multicall",
+      "outputs": [
+        {
+          "internalType": "bytes[]",
+          "name": "results",
+          "type": "bytes[]"
+        }
+      ],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "positionManager",
+      "outputs": [
+        {
+          "internalType": "address",
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+          "name": "token",
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+        {
+          "internalType": "uint256",
+          "name": "value",
+          "type": "uint256"
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+      ],
+      "name": "pull",
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+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
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+      "name": "refundETH",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
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+        {
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+          "name": "value",
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+        {
+          "internalType": "bytes32",
+          "name": "s",
+          "type": "bytes32"
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+      ],
+      "name": "selfPermit",
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+      "stateMutability": "payable",
+      "type": "function"
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+    {
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+          "name": "token",
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+      "name": "selfPermitAllowed",
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+      "type": "function"
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+          "internalType": "address",
+          "name": "token",
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+          "name": "nonce",
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+      "name": "selfPermitAllowedIfNecessary",
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+      "type": "function"
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+          "name": "value",
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+          "type": "bytes32"
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+      "name": "selfPermitIfNecessary",
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+      "type": "function"
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+          "name": "amountIn",
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+        },
+        {
+          "internalType": "address",
+          "name": "to",
+          "type": "address"
+        }
+      ],
+      "name": "swapExactTokensForTokens",
+      "outputs": [
+        {
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+          "name": "amountOut",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "payable",
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+          "name": "amountOut",
+          "type": "uint256"
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+        {
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+          "name": "amountInMax",
+          "type": "uint256"
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+          "name": "path",
+          "type": "address[]"
+        },
+        {
+          "internalType": "address",
+          "name": "to",
+          "type": "address"
+        }
+      ],
+      "name": "swapTokensForExactTokens",
+      "outputs": [
+        {
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+          "name": "amountIn",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "payable",
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+          "type": "address"
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+        {
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+          "name": "amountMinimum",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "recipient",
+          "type": "address"
+        }
+      ],
+      "name": "sweepToken",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
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+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        }
+      ],
+      "name": "sweepToken",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
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+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        },
+        {
+          "internalType": "uint256",
+          "name": "feeBips",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "feeRecipient",
+          "type": "address"
+        }
+      ],
+      "name": "sweepTokenWithFee",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "token",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "recipient",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "feeBips",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "feeRecipient",
+          "type": "address"
+        }
+      ],
+      "name": "sweepTokenWithFee",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "int256",
+          "name": "amount0Delta",
+          "type": "int256"
+        },
+        {
+          "internalType": "int256",
+          "name": "amount1Delta",
+          "type": "int256"
+        },
+        {
+          "internalType": "bytes",
+          "name": "_data",
+          "type": "bytes"
+        }
+      ],
+      "name": "uniswapV3SwapCallback",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "recipient",
+          "type": "address"
+        }
+      ],
+      "name": "unwrapWETH9",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        }
+      ],
+      "name": "unwrapWETH9",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "recipient",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "feeBips",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "feeRecipient",
+          "type": "address"
+        }
+      ],
+      "name": "unwrapWETH9WithFee",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "amountMinimum",
+          "type": "uint256"
+        },
+        {
+          "internalType": "uint256",
+          "name": "feeBips",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "feeRecipient",
+          "type": "address"
+        }
+      ],
+      "name": "unwrapWETH9WithFee",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "wrapETH",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "stateMutability": "payable",
+      "type": "receive"
+    }
+  ],
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+  "linkReferences": {},
+  "deployedLinkReferences": {}
+}
diff --git a/eth_defi/balances.py b/eth_defi/balances.py
index ee666509..3a3efce7 100644
--- a/eth_defi/balances.py
+++ b/eth_defi/balances.py
@@ -20,6 +20,7 @@
 from eth_defi.provider.broken_provider import get_almost_latest_block_number
 from eth_defi.provider.named import get_provider_name
 from eth_defi.token import fetch_erc20_details, DEFAULT_TOKEN_CACHE
+from eth_defi.vault.lower_case_dict import LowercaseDict
 
 logger = logging.getLogger(__name__)
 
@@ -366,7 +367,7 @@ def _handler(success, value):
                 raise BalanceFetchFailed(f"Could not read token balance for ERC-20: {token_address} for address {address}")
 
     if decimalise:
-        result = {}
+        result = LowercaseDict()
         for token_address, raw_balance in all_calls.items():
             token = fetch_erc20_details(web3, token_address, cache=token_cache, chain_id=chain_id)
             result[token_address] = token.convert_to_decimals(raw_balance) if raw_balance is not None else None
diff --git a/eth_defi/enzyme/generic_adapter_vault.py b/eth_defi/enzyme/generic_adapter_vault.py
index 4c8a7c4b..2a8181f4 100644
--- a/eth_defi/enzyme/generic_adapter_vault.py
+++ b/eth_defi/enzyme/generic_adapter_vault.py
@@ -39,7 +39,7 @@
 from eth_defi.token import TokenDetails, fetch_erc20_details
 from eth_defi.trace import assert_transaction_success_with_explanation
 from eth_defi.uniswap_v2.constants import QUICKSWAP_DEPLOYMENTS, UNISWAP_V2_DEPLOYMENTS
-from eth_defi.uniswap_v2.utils import ZERO_ADDRESS
+from eth_defi.abi import ZERO_ADDRESS
 from eth_defi.uniswap_v3.constants import UNISWAP_V3_DEPLOYMENTS
 
 logger = logging.getLogger(__name__)
diff --git a/eth_defi/enzyme/price_feed.py b/eth_defi/enzyme/price_feed.py
index f04a5371..bb0045b3 100644
--- a/eth_defi/enzyme/price_feed.py
+++ b/eth_defi/enzyme/price_feed.py
@@ -10,14 +10,13 @@
 from web3.contract import Contract
 from web3.exceptions import ContractLogicError
 
-from eth_defi.abi import get_deployed_contract
+from eth_defi.abi import get_deployed_contract, ZERO_ADDRESS_STR
 from eth_defi.chainlink.round_data import ChainLinkLatestRoundData
 from eth_defi.enzyme.deployment import EnzymeDeployment, RateAsset
 from eth_defi.event_reader.conversion import decode_data, convert_uint256_bytes_to_address, convert_int256_bytes_to_int
 from eth_defi.event_reader.filter import Filter
 from eth_defi.event_reader.reader import Web3EventReader
 from eth_defi.token import fetch_erc20_details, TokenDetails
-from eth_defi.utils import ZERO_ADDRESS_STR
 
 
 class UnsupportedBaseAsset(Exception):
diff --git a/eth_defi/enzyme/vault.py b/eth_defi/enzyme/vault.py
index 798a86f2..7180be14 100644
--- a/eth_defi/enzyme/vault.py
+++ b/eth_defi/enzyme/vault.py
@@ -10,7 +10,7 @@
 
 from web3.exceptions import ContractLogicError
 
-from eth_defi.abi import get_deployed_contract
+from eth_defi.abi import get_deployed_contract, ZERO_ADDRESS
 from eth_typing import HexAddress
 from web3 import Web3
 from web3.contract import Contract
@@ -21,7 +21,6 @@
 from eth_defi.event_reader.reader import Web3EventReader
 from eth_defi.hotwallet import HotWallet
 from eth_defi.token import TokenDetails, fetch_erc20_details
-from eth_defi.uniswap_v2.utils import ZERO_ADDRESS
 
 logger = logging.getLogger(__name__)
 
diff --git a/eth_defi/event_reader/multicall_batcher.py b/eth_defi/event_reader/multicall_batcher.py
new file mode 100644
index 00000000..682e09bf
--- /dev/null
+++ b/eth_defi/event_reader/multicall_batcher.py
@@ -0,0 +1,308 @@
+"""Multicall helpers.
+
+- Perform several smart contract calls in one RPC request using `Multicall <https://www.multicall3.com/>`__ contract
+
+- A wrapper around `Multicall library by Bantg <https://github.com/banteg/multicall.py>`__
+
+- Batching and multiprocessing reworked to use threads
+
+.. warning::
+
+    See Multicall `private key leak hack warning <https://github.com/mds1/multicall>`__.
+"""
+import abc
+import datetime
+import logging
+from abc import abstractmethod
+from dataclasses import dataclass
+from itertools import islice
+from typing import TypeAlias, Iterable, Generator, Hashable, Any, Final
+
+from eth_typing import HexAddress, BlockIdentifier, BlockNumber
+from web3 import Web3
+from web3.contract import Contract
+from web3.contract.contract import ContractFunction
+
+from eth_defi.abi import get_deployed_contract, ZERO_ADDRESS, encode_function_call
+
+logger = logging.getLogger(__name__)
+
+#: Address, arguments tuples
+CallData: TypeAlias = tuple[str | HexAddress, tuple]
+
+#: Multicall3 address
+MULTICALL_DEPLOY_ADDRESS: Final[str] = "0xca11bde05977b3631167028862be2a173976ca11"
+
+# The muticall small contract seems unable to fetch token balances at blocks preceding
+# the block when it was deployed on a chain. We can thus only use multicall for recent
+# enough blocks.
+MUTLICALL_DEPLOYED_AT: Final[dict[int, tuple[BlockNumber, datetime.datetime]]] = {
+    # values: (block_number, blok_timestamp)
+    1: (14_353_601, datetime.datetime(2022, 3, 9, 16, 17, 56)),
+    56: (15_921_452, datetime.datetime(2022, 3, 9, 23, 17, 54)),  # BSC
+    137: (25_770_160, datetime.datetime(2022, 3, 9, 15, 58, 11)),  # Pooly
+    43114: (11_907_934, datetime.datetime(2022, 3, 9, 23, 11, 52)),  # Ava
+    42161: (7_654_707, datetime.datetime(2022, 3, 9, 16, 5, 28)),  # Arbitrum
+}
+
+
+def get_multicall_contract(
+    web3: Web3,
+    address: HexAddress | str | None = None,
+    block_identifier: BlockNumber = None,
+) -> "Contract":
+    """Return a multicall smart contract instance.
+
+    - Get `IMulticall3` compiled with Forge
+
+    - Use `multicall3` ABI.
+    """
+
+    if address is None:
+        address = MULTICALL_DEPLOY_ADDRESS
+        chain_id = web3.eth.chain_id
+        multicall_data = MUTLICALL_DEPLOYED_AT.get(chain_id)
+        # Do a block number check for archive nodes
+        if multicall_data is not None:
+            assert multicall_data[0] < block_identifier, f"Multicall not yet deployed at {block_identifier}"
+
+    return get_deployed_contract(web3, "multicall/IMulticall3.json", address)
+
+
+def call_multicall(
+    multicall_contract: Contract,
+    calls: list["MulticallWrapper"],
+    block_identifier: BlockIdentifier,
+) -> dict[Hashable, Any]:
+    """Call a multicall contract."""
+
+    assert all(isinstance(c, MulticallWrapper) for c in calls), f"Got: {calls}"
+
+    encoded_calls = [c.get_address_and_data() for c in calls]
+
+    payload_size = sum(20 + len(c[1]) for c in encoded_calls)
+
+    start = datetime.datetime.utcnow()
+
+    logger.info(
+        f"Performing multicall, input payload total size %d bytes on %d functions, block is {block_identifier:,}",
+        payload_size,
+        len(encoded_calls),
+    )
+
+    bound_func = multicall_contract.functions.tryBlockAndAggregate(
+        calls=encoded_calls,
+        requireSuccess=False,
+    )
+    _, _, calls_results = bound_func.call(block_identifier=block_identifier)
+
+    results = {}
+
+    assert len(calls_results) == len(calls_results)
+
+    out_size = sum(len(o[1]) for o in calls_results)
+
+    for call, output_tuple in zip(calls, calls_results):
+        succeed, output = output_tuple
+        results[call.get_key()] = call.handle(succeed, output)
+
+    # User friendly logging
+    duration = datetime.datetime.utcnow() - start
+    logger.info("Multicall result fetch and handling took %s, output was %d bytes", duration, out_size)
+
+    return results
+
+
+def call_multicall_batched_single_thread(
+    multicall_contract: Contract,
+    calls: list["MulticallWrapper"],
+    block_identifier: BlockIdentifier,
+    batch_size=15,
+) -> dict[Hashable, Any]:
+    """Call Multicall contract with a payload.
+
+    - Single threaded
+
+    :param web3_factory:
+        - Each thread will get its own web3 instance
+
+    :param batch_size:
+        Don't do more than this calls per one RPC.
+
+    """
+    result = {}
+    assert len(calls) > 0
+    for idx, batch in enumerate(_batcher(calls, batch_size), start=1):
+        logger.info("Processing multicall batch #%d, batch size %d", idx, batch_size)
+        partial_result = call_multicall(multicall_contract, batch, block_identifier)
+        result.update(partial_result)
+    return result
+
+
+def call_multicall_debug_single_thread(
+    multicall_contract: Contract,
+    calls: list["MulticallWrapper"],
+    block_identifier: BlockIdentifier,
+):
+    """Skip Multicall contract and try eth_call directly.
+
+    - For debugging problems
+
+    - Perform normal `eth_call`
+
+    - Log output what calls are going out to diagnose issues
+    """
+    assert len(calls) > 0
+    web3 = multicall_contract.w3
+
+    results = {}
+
+    for idx, call in enumerate(calls, start=1):
+        address, data = call.get_address_and_data()
+
+        logger.info(
+            "Doing call #%d, call info %s, data len %d, args %s",
+            idx,
+            call,
+            len(data),
+            call.get_human_args(),
+        )
+        started = datetime.datetime.utcnow()
+
+        # 0xcdca1753000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000004c4b400000000000000000000000000000000000000000000000000000000000000042833589fcd6edb6e08f4c7c32d4f71b54bda029130001f44200000000000000000000000000000000000006000bb8ca73ed1815e5915489570014e024b7ebe65de67900000000000000000000000000000000000000000000000000000000000
+        if len(data) >= 196:
+            logger.info("To: %s, data: %s", address, data.hex())
+
+        try:
+            output = web3.eth.call(
+                {
+                    "from": ZERO_ADDRESS,
+                    "to": address,
+                    "data": data,
+                },
+                block_identifier=block_identifier,
+            )
+            success = True
+        except Exception as e:
+            success = False
+            output = None
+            logger.error("Failed with %s", e)
+
+        results[call.get_key()] = call.handle(success, output)
+
+        duration = datetime.datetime.utcnow() - started
+        logger.info("Success %s, took %s", success, duration)
+
+    return results
+
+
+def _batcher(iterable: Iterable, batch_size: int) -> Generator:
+    """"Batch data into lists of batch_size length. The last batch may be shorter.
+
+    https://stackoverflow.com/a/8290514/2527433
+    """
+    iterator = iter(iterable)
+    while batch := list(islice(iterator, batch_size)):
+        yield batch
+
+
+@dataclass(slots=True, frozen=True)
+class MulticallWrapper(abc.ABC):
+    """Wrap a call going through the Multicall contract.
+
+    - Each call in the batch is represented by one instance of :py:class:`MulticallWrapper`
+
+    - This class must be subclassed and needed :py:meth:`get_key`, :py:meth:`handle` and :py:meth:`__repr__`
+    """
+
+    #: Bound web3.py function with args in the place
+    call: ContractFunction
+
+    #: Set for extensive info logging
+    debug: bool
+
+    def __post_init__(self):
+        assert isinstance(self.call, ContractFunction)
+        assert self.call.args
+
+    def __repr__(self):
+        """Log output about this call"""
+        raise NotImplementedError(f"Please implement in a subclass")
+
+    @property
+    def contract_address(self) -> HexAddress:
+        return self.call.address
+
+    @abstractmethod
+    def get_key(self) -> Hashable:
+        """Get key that will identify this call in the result dictionary"""
+
+    @abstractmethod
+    def handle(self, succeed: bool, raw_return_value: bytes) -> Any:
+        """Parse the call result.
+
+        :param succeed:
+            Did we revert or not
+
+        :param raw_return_value:
+            Undecoded bytes from the Solidity function call
+
+        :return:
+            The value placed in the return dict
+        """
+
+    def get_human_id(self) -> str:
+        return str(self.get_key())
+
+    def get_address_and_data(self) -> tuple[HexAddress, bytes]:
+        data = encode_function_call(
+            self.call,
+            self.call.args
+        )
+        return self.call.address, data
+
+    def get_human_args(self) -> str:
+        """Get Solidity args as human readable string for debugging."""
+        args = self.call.args
+        def _humanise(a):
+            if not type(a) == int:
+                if hasattr(a, "hex"):
+                    return a.hex()
+            return str(a)
+        return "(" + ", ".join(_humanise(a) for a in args) + ")"
+
+    def multicall_callback(self, succeed: bool, raw_return_value: Any) -> Any:
+        """Convert the raw Solidity function call result to a denominated token amount.
+
+        - Multicall library callback
+
+        :return:
+            The token amount in the reserve currency we get on the market sell.
+
+            None if this path was not supported (Solidity reverted).
+        """
+        if not succeed:
+            # Avoid expensive logging if we do not need it
+            if self.debug:
+                # Print calldata so we can copy-paste it to Tenderly for symbolic debug stack trace
+                address, data = self.get_address_and_data()
+                logger.info("Calldata failed %s: %s", address, data)
+        try:
+            value = self.handle(succeed, raw_return_value)
+        except Exception as e:
+            logger.error(
+                "Handler failed %s for return value %s",
+                self.get_human_id(),
+                raw_return_value,
+            )
+            raise e #  0.0000673
+
+        if self.debug:
+            logger.info(
+            "Succeed: %s, got handled value %s",
+                self,
+                self.get_human_id(),
+                value,
+            )
+
+        return value
diff --git a/eth_defi/lagoon/vault.py b/eth_defi/lagoon/vault.py
index ee58486f..e81a8be1 100644
--- a/eth_defi/lagoon/vault.py
+++ b/eth_defi/lagoon/vault.py
@@ -86,13 +86,16 @@ def __init__(
     ):
         """
         :param spec:
-            Address must be Velvet portfolio address (not vault address)
+            Address must be Lagoon vault  address (not Safe address)
         """
         assert isinstance(web3, Web3)
         assert isinstance(spec, VaultSpec)
         self.web3 = web3
         self.spec = spec
 
+    def __repr__(self):
+        return f"<Lagoon vault:{self.vault_contract.address} safe:{self.safe_address}>"
+
     def has_block_range_event_support(self):
         return True
 
diff --git a/eth_defi/safe/trace.py b/eth_defi/safe/trace.py
index e72cbb5d..364e4171 100644
--- a/eth_defi/safe/trace.py
+++ b/eth_defi/safe/trace.py
@@ -48,7 +48,7 @@ def assert_execute_module_success(
             trace_output = print_symbolic_trace(get_or_create_contract_registry(web3), trace_data)
             raise AssertionError(f"Gnosis Safe multisig tx {tx_hash.hex()} failed.\nTrace output:\n{trace_output}\nYou might want to trace with JSON_RPC_TENDERLY method to get better diagnostics.")
         else:
-            raise AssertionError(f"Gnosis Safe tx failed")
+            raise AssertionError(f"Gnosis Safe tx failed. Remember to check gas.")
     elif success == 1:
         return
     else:
diff --git a/eth_defi/token.py b/eth_defi/token.py
index e0b00b10..2d53acd3 100644
--- a/eth_defi/token.py
+++ b/eth_defi/token.py
@@ -94,11 +94,22 @@ def chain_id(self) -> int:
         """The EVM chain id where this token lives."""
         return self.contract.w3.eth.chain_id
 
-    @property
+    @cached_property
     def address(self) -> HexAddress:
-        """The address of this token."""
+        """The address of this token.
+
+        Always lowercase.
+        """
         return self.contract.address
 
+    @cached_property
+    def address_lower(self) -> HexAddress:
+        """The address of this token.
+
+        Always lowercase.
+        """
+        return self.contract.address.lower()
+
     def convert_to_decimals(self, raw_amount: int) -> Decimal:
         """Convert raw token units to decimals.
 
@@ -136,6 +147,7 @@ def fetch_balance_of(self, address: HexAddress | str, block_identifier="latest")
         :return:
             Converted to decimal using :py:meth:`convert_to_decimal`
         """
+        address = Web3.to_checksum_address(address)
         raw_amount = self.contract.functions.balanceOf(address).call(block_identifier=block_identifier)
         return self.convert_to_decimals(raw_amount)
 
@@ -207,6 +219,15 @@ def create_token(
     return deploy_contract(web3, "ERC20MockDecimals.json", deployer, name, symbol, supply, decimals)
 
 
+def get_erc20_contract(
+    web3: Web3,
+    address: HexAddress,
+    contract_name="ERC20MockDecimals.json",
+) -> Contract:
+    """Wrap address as ERC-20 standard interface."""
+    return get_deployed_contract(web3, contract_name, address)
+
+
 def fetch_erc20_details(
     web3: Web3,
     token_address: Union[HexAddress, str],
@@ -272,7 +293,7 @@ def fetch_erc20_details(
     if not chain_id:
         chain_id = web3.eth.chain_id
 
-    erc_20 = get_deployed_contract(web3, contract_name, token_address)
+    erc_20 = get_erc20_contract(web3, token_address, contract_name)
 
     key = TokenDetails.generate_cache_key(chain_id, token_address)
 
diff --git a/eth_defi/uniswap_v2/deployment.py b/eth_defi/uniswap_v2/deployment.py
index bf02f7eb..aaa59683 100644
--- a/eth_defi/uniswap_v2/deployment.py
+++ b/eth_defi/uniswap_v2/deployment.py
@@ -21,7 +21,7 @@
 from web3 import Web3
 from web3.contract import Contract
 
-from eth_defi.abi import get_contract, get_deployed_contract
+from eth_defi.abi import get_contract, get_deployed_contract, ZERO_ADDRESS_STR
 from eth_defi.deploy import deploy_contract
 from eth_defi.revert_reason import fetch_transaction_revert_reason
 
@@ -29,8 +29,6 @@
 from eth_defi.uniswap_v2.utils import pair_for, sort_tokens
 from web3.exceptions import ContractLogicError
 
-from eth_defi.utils import ZERO_ADDRESS_STR
-
 FOREVER_DEADLINE = 2**63
 
 
diff --git a/eth_defi/uniswap_v2/swap.py b/eth_defi/uniswap_v2/swap.py
index 3e4d47b5..2b049874 100644
--- a/eth_defi/uniswap_v2/swap.py
+++ b/eth_defi/uniswap_v2/swap.py
@@ -188,3 +188,5 @@ def swap_with_slippage_protection(
             recipient_address,
             deadline,
         )
+
+    raise NotImplementedError("Whoops, something wrong with function arguments")
diff --git a/eth_defi/uniswap_v2/utils.py b/eth_defi/uniswap_v2/utils.py
index 0a8e2b3d..09d2e8d3 100644
--- a/eth_defi/uniswap_v2/utils.py
+++ b/eth_defi/uniswap_v2/utils.py
@@ -7,10 +7,7 @@
 from eth_typing import HexAddress, HexStr
 from web3 import Web3
 
-from eth_defi.utils import ZERO_ADDRESS_STR
-
-#: Ethereum 0x0000000000000000000000000000000000000000 addresss
-ZERO_ADDRESS = ZERO_ADDRESS_STR
+from eth_defi.abi import ZERO_ADDRESS
 
 
 def sort_tokens(token_a: HexAddress, token_b: HexAddress) -> Tuple[HexAddress, HexAddress]:
diff --git a/eth_defi/uniswap_v3/constants.py b/eth_defi/uniswap_v3/constants.py
index 3acc5c37..3a90c9e9 100644
--- a/eth_defi/uniswap_v3/constants.py
+++ b/eth_defi/uniswap_v3/constants.py
@@ -42,9 +42,11 @@
         "position_manager": "0xC36442b4a4522E871399CD717aBDD847Ab11FE88",
         "quoter": "0xb27308f9F90D607463bb33eA1BeBb41C27CE5AB6",
     },
+    # Base router is SwapRouter02 deployed by Mikko
+    # https://github.com/tradingstrategy-ai/swap-router-contracts
     "base": {
         "factory": "0x33128a8fC17869897dcE68Ed026d694621f6FDfD",
-        "router": "0x2626664c2603336E57B271c5C0b26F421741e481",
+        "router": "0x5788F91Aa320e0610122fb88B39Ab8f35e50040b",
         "position_manager": "0x03a520b32C04BF3bEEf7BEb72E919cf822Ed34f1",
         "quoter": "0x3d4e44Eb1374240CE5F1B871ab261CD16335B76a",
         "quoter_v2": True,
diff --git a/eth_defi/uniswap_v3/deployment.py b/eth_defi/uniswap_v3/deployment.py
index 5d908ff0..a75dd116 100644
--- a/eth_defi/uniswap_v3/deployment.py
+++ b/eth_defi/uniswap_v3/deployment.py
@@ -65,6 +65,9 @@ class UniswapV3Deployment:
     #:
     quoter_v2: bool = False
 
+    #: Router contract is SwapRouter02
+    router_v2: bool = False
+
     def __repr__(self):
         return f"<Uniswap v3 as chain: {self.web3.eth.chain_id}, router: {self.swap_router.address} factory: {self.factory.address}>"
 
@@ -411,6 +414,7 @@ def fetch_deployment(
     position_manager_address: HexAddress | str,
     quoter_address: HexAddress | str,
     quoter_v2=False,
+    router_v2=False,
 ) -> UniswapV3Deployment:
     """Construct Uniswap v3 deployment based on on-chain data.
 
@@ -429,7 +433,11 @@ def fetch_deployment(
         Data class representing Uniswap v3 exchange deployment
     """
     factory = get_deployed_contract(web3, "uniswap_v3/UniswapV3Factory.json", factory_address)
-    router = get_deployed_contract(web3, "uniswap_v3/SwapRouter.json", router_address)
+
+    if router_v2:
+        router = get_deployed_contract(web3, "uniswap-swap-contracts/SwapRouter02.json", router_address)
+    else:
+        router = get_deployed_contract(web3, "uniswap_v3/SwapRouter.json", router_address)
     position_manager = get_deployed_contract(web3, "uniswap_v3/NonfungiblePositionManager.json", position_manager_address)
 
     if quoter_v2:
@@ -452,6 +460,7 @@ def fetch_deployment(
         quoter=quoter,
         PoolContract=PoolContract,
         quoter_v2=quoter_v2,
+        router_v2=router_v2,
     )
 
 
diff --git a/eth_defi/uniswap_v3/swap.py b/eth_defi/uniswap_v3/swap.py
index 1e092464..387d5eaf 100644
--- a/eth_defi/uniswap_v3/swap.py
+++ b/eth_defi/uniswap_v3/swap.py
@@ -23,7 +23,7 @@ def swap_with_slippage_protection(
     recipient_address: HexAddress,
     base_token: Contract,
     quote_token: Contract,
-    pool_fees: list[int],
+    pool_fees: list[int] | tuple[int],
     intermediate_token: Contract | None = None,
     max_slippage: float = 15,
     amount_in: int | None = None,
@@ -149,15 +149,38 @@ def swap_with_slippage_protection(
             block_number,
         )
 
-        return router.functions.exactInput(
-            (
-                encoded_path,
-                recipient_address,
-                deadline,
-                amount_in,
-                estimated_min_amount_out,
+        if uniswap_v3_deployment.router_v2:
+            #     struct ExactInputParams {
+            #         bytes path;
+            #         address recipient;
+            #         uint256 amountIn;
+            #         uint256 amountOutMinimum;
+            #     }
+            #
+            #     /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
+            #     /// @dev Setting `amountIn` to 0 will cause the contract to look up its own balance,
+            #     /// and swap the entire amount, enabling contracts to send tokens before calling this function.
+            #     /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
+            #     /// @return amountOut The amount of the received token
+            #     function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);
+            return router.functions.exactInput(
+                (
+                    encoded_path,
+                    recipient_address,
+                    amount_in,
+                    estimated_min_amount_out,
+                )
+            )
+        else:
+            return router.functions.exactInput(
+                (
+                    encoded_path,
+                    recipient_address,
+                    deadline,
+                    amount_in,
+                    estimated_min_amount_out,
+                )
             )
-        )
     elif amount_out:
         if amount_in is not None:
             raise ValueError("amount_out is specified, amount_in has to be None")
diff --git a/eth_defi/utils.py b/eth_defi/utils.py
index 5a4b8d80..601a018c 100644
--- a/eth_defi/utils.py
+++ b/eth_defi/utils.py
@@ -15,9 +15,6 @@
 logger = logging.getLogger(__name__)
 
 
-#: Ethereum 0x0000000000000000000000000000000000000000 address as a string
-ZERO_ADDRESS_STR = "0x0000000000000000000000000000000000000000"
-
 
 def sanitise_string(s: str) -> str:
     """Remove null characters."""
diff --git a/eth_defi/vault/base.py b/eth_defi/vault/base.py
index a4a3f888..c73403b2 100644
--- a/eth_defi/vault/base.py
+++ b/eth_defi/vault/base.py
@@ -10,7 +10,7 @@
 """
 
 from abc import ABC, abstractmethod
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from decimal import Decimal
 from functools import cached_property
 from typing import TypedDict
@@ -20,6 +20,7 @@
 from web3 import Web3
 
 from eth_defi.token import TokenAddress, fetch_erc20_details, TokenDetails
+from eth_defi.vault.lower_case_dict import LowercaseDict
 
 
 @dataclass(slots=True, frozen=True)
@@ -79,9 +80,21 @@ class VaultPortfolio:
     - See :py:meth:`VaultBase.fetch_portfolio`
     """
 
-    spot_erc20: dict[HexAddress, Decimal]
+    #: List of tokens and their amounts
+    #:
+    #: Addresses not checksummed
+    #:
+    spot_erc20: LowercaseDict
+
+    #: For route finding, which DEX tokens should use.
+    #:
+    #: Token address -> DEX id string mapping
+    dex_hints: dict[HexAddress, list[str]] = field(default_factory=dict)
 
     def __post_init__(self):
+
+        assert isinstance(self.spot_erc20, LowercaseDict)
+
         for token, value in self.spot_erc20.items():
             assert type(token) == str
             assert isinstance(value, Decimal)
@@ -98,10 +111,10 @@ def is_spot_only(self) -> bool:
     def get_position_count(self):
         return len(self.spot_erc20)
 
-    def get_raw_spot_balances(self, web3: Web3) -> dict[HexAddress, int]:
+    def get_raw_spot_balances(self, web3: Web3) -> LowercaseDict:
         """Convert spot balances to raw token balances"""
         chain_id = web3.eth.chain_id
-        return {addr: fetch_erc20_details(web3, addr, chain_id=chain_id).convert_to_raw(value) for addr, value in self.spot_erc20.items()}
+        return LowercaseDict(**{addr: fetch_erc20_details(web3, addr, chain_id=chain_id).convert_to_raw(value) for addr, value in self.spot_erc20.items()})
 
 
 
diff --git a/eth_defi/vault/lower_case_dict.py b/eth_defi/vault/lower_case_dict.py
new file mode 100644
index 00000000..6624cf0b
--- /dev/null
+++ b/eth_defi/vault/lower_case_dict.py
@@ -0,0 +1,48 @@
+"""Ethereum address headache tools."""
+
+class LowercaseDict(dict):
+    """A dictionary subclass that automatically converts all string keys to lowercase.
+
+    - Because of legacy, Ethrereum services mix loewrcased and checksum-case addresses
+
+    - Ethereum checksum addresse where a f**king bad idea and everyone needs to suffer from
+      this shitty idea for the eternity
+    """
+
+    def __init__(self, *args, **kwargs):
+        super().__init__()
+        # Handle initialization from dict or kwargs
+        if args:
+            if len(args) > 1:
+                raise TypeError('expected at most 1 argument, got %d' % len(args))
+            self.update(args[0])
+        if kwargs:
+            self.update(kwargs)
+
+    def __setitem__(self, key, value):
+        """Override setitem to convert string keys to lowercase."""
+        key = key.lower()
+        super().__setitem__(key, value)
+
+    def __getitem__(self, key):
+        """Override getitem to convert string keys to lowercase."""
+        key = key.lower()
+        return super().__getitem__(key)
+
+    def get(self, key, default=None):
+        """Override get method to convert string keys to lowercase."""
+        key = key.lower()
+        return super().get(key, default)
+
+    def update(self, other=None, **kwargs):
+        """Override update to convert string keys to lowercase."""
+        if other is not None:
+            for k, v in other.items() if isinstance(other, dict) else other:
+                self[k] = v
+        for k, v in kwargs.items():
+            self[k] = v
+
+    def setdefault(self, key, default=None):
+        """Override setdefault to convert string keys to lowercase."""
+        key = key.lower()
+        return super().setdefault(key, default)
\ No newline at end of file
diff --git a/eth_defi/vault/mass_buyer.py b/eth_defi/vault/mass_buyer.py
new file mode 100644
index 00000000..866cd441
--- /dev/null
+++ b/eth_defi/vault/mass_buyer.py
@@ -0,0 +1,191 @@
+"""Create token buy lists for testing."""
+import logging
+from dataclasses import dataclass
+from decimal import Decimal
+from typing import TypeAlias, Iterable
+
+from eth_typing import HexAddress, BlockIdentifier
+from web3 import Web3
+from web3.contract.contract import ContractFunction
+
+from eth_defi.token import TokenDetails, get_erc20_contract
+from eth_defi.uniswap_v2.deployment import UniswapV2Deployment
+from eth_defi.uniswap_v2.swap import swap_with_slippage_protection as swap_with_slippage_protection_uni_v2
+from eth_defi.uniswap_v3.swap import swap_with_slippage_protection as swap_with_slippage_protection_uni_v3
+from eth_defi.uniswap_v3.deployment import UniswapV3Deployment
+from eth_defi.vault.base import VaultPortfolio
+from eth_defi.vault.lower_case_dict import LowercaseDict
+from eth_defi.vault.valuation import NetAssetValueCalculator, Route, ValuationQuoter
+
+logger = logging.getLogger(__name__)
+
+TokenTradeDefinition: TypeAlias = tuple[str, str, str]
+
+
+BASE_SHOPPING_LIST: list[TokenTradeDefinition] = [
+    ("uniswap-v2", "keycat", "0x9a26f5433671751c3276a065f57e5a02d2817973"),  # KEYCAT-WETH
+    ("uniswap-v3", "odos", "0xca73ed1815e5915489570014e024b7ebe65de679"),  # ODOS-WETH
+    ("uniswap-v3", "cbBTC", "0xcbb7c0000ab88b473b1f5afd9ef808440eed33bf"),  # CBBTC-USDC
+    ("uniswap-v2", "AGNT", "0x7484a9fb40b16c4dfe9195da399e808aa45e9bb9"),  # AGNT-USDC
+    ("uniswap-v3", "SIMMI", "0x161e113b8e9bbaefb846f73f31624f6f9607bd44")  # Uniswap v3 only
+]
+
+
+@dataclass(frozen=True, slots=True)
+class BuyResult:
+    needed_transactions: list[ContractFunction]
+    taken_routes: dict[TokenDetails, Route]
+
+
+def _default_buy_function(
+    web3,
+    user: HexAddress,
+    route: Route,
+    amount: Decimal,
+    uniswap_v2: UniswapV2Deployment,
+    uniswap_v3: UniswapV3Deployment,
+) -> Iterable[ContractFunction]:
+    """Buy tokens.
+
+    :param user:
+        Buyer address.
+
+        Assume unlocked Anvil ccount.
+    """
+
+    assert isinstance(route, Route)
+    assert isinstance(amount, Decimal)
+
+    source_token = route.source_token
+    raw_amount = source_token.convert_to_raw(amount)
+
+    logger.info("About to buy %s", route.quoter.format_path(route))
+
+    match route.dex_hint:
+        case "uniswap-v2":
+            assert uniswap_v2, "Uniswap v2 deployment must be given"
+            assert len(route.path) in (2, 3), f"Long paths not supported: {route.path}"
+            intermediate_token = route.intermediate_token
+            existing_balance = source_token.fetch_balance_of(user)
+            assert existing_balance > amount, f"Not enough token {source_token.symbol} to approve(). Has {existing_balance}, need {amount}"
+            yield source_token.contract.functions.approve(uniswap_v2.router.address, raw_amount)
+            yield swap_with_slippage_protection_uni_v2(
+                uniswap_v2_deployment=uniswap_v2,
+                recipient_address=user,
+                quote_token=route.source_token.contract,
+                base_token=route.target_token.contract,
+                intermediate_token=intermediate_token,
+                amount_in=raw_amount,
+            )
+        case "uniswap-v3":
+            assert uniswap_v3, "Uniswap v3 deployment must be given"
+            assert len(route.path) in (2, 3), f"Long paths not supported: {route.path}"
+            intermediate_token = route.intermediate_token
+            existing_balance = source_token.fetch_balance_of(user)
+            assert existing_balance > amount, f"Not enough token {source_token.symbol} to approve(). Has {existing_balance}, need {amount}"
+            yield source_token.contract.functions.approve(uniswap_v3.swap_router.address, raw_amount)
+            yield swap_with_slippage_protection_uni_v3(
+                uniswap_v3_deployment=uniswap_v3,
+                recipient_address=user,
+                quote_token=route.source_token.contract,
+                base_token=route.target_token.contract,
+                intermediate_token=intermediate_token,
+                amount_in=raw_amount,
+                pool_fees=route.fees,
+            )
+        case _:
+            raise NotImplementedError(f"Unknown dex_hint {route.dex_hint} for {route}")
+
+
+def create_buy_portfolio(
+    tokens: list[TokenTradeDefinition],
+    amount_denomination_token: Decimal,
+) -> VaultPortfolio:
+    """Create a portfolio of tokens to buy based on given Python."""
+    buy_portfolio = VaultPortfolio(
+        spot_erc20=LowercaseDict(**{t[2]: amount_denomination_token for t in tokens}),
+        dex_hints={t[2]: t[0] for t in tokens},
+    )
+    return buy_portfolio
+
+
+def buy_tokens(
+    web3: Web3,
+    user: HexAddress,
+    portfolio: VaultPortfolio,
+    denomination_token: HexAddress | TokenDetails,
+    intermediary_tokens: set[HexAddress | TokenDetails],
+    quoters: set[ValuationQuoter],
+    multicall: bool | None = None,
+    block_identifier: BlockIdentifier = None,
+    multicall_gas_limit=10_000_000,
+    buy_func=_default_buy_function,
+    uniswap_v2: UniswapV2Deployment | None = None,
+    uniswap_v3: UniswapV3Deployment | None = None,
+    multicall_batch_size: int=5,
+) -> BuyResult:
+    """Buy bunch of tokens on the wish list.
+
+    - User for testing
+    - Automatically resolve the routes with the best quote
+    """
+
+    user = Web3.to_checksum_address(user)
+    logger.info("Preparing mass buy %d tokens, sending to %s", len(portfolio.tokens), user)
+
+    nav = NetAssetValueCalculator(
+        web3=web3,
+        denomination_token=denomination_token,
+        intermediary_tokens=intermediary_tokens,
+        quoters=quoters,
+        multicall=multicall,
+        batch_size=multicall_batch_size,
+    )
+
+    swap_matrix = nav.find_swap_routes(portfolio)
+
+    used_routes: dict[TokenDetails, Route] = {}
+
+    calls = []
+
+    for token, route_tuple in swap_matrix.best_results_by_token.items():
+        assert len(route_tuple) > 0
+
+        best_option = route_tuple[0]
+        best_route, expected_receive = best_option
+
+        logger.info(
+            "Buying %s using route %s, got %d options, expected amount %s, for %s",
+            token,
+            best_route,
+            len(route_tuple),
+            expected_receive,
+            user,
+        )
+
+        assert expected_receive is not None, f"Could not find working routes for token {token.symbol}.Routes are:\n{route_tuple}"
+
+        buy_amount = portfolio.spot_erc20[token.address]
+
+        # Generate both approve and swap txs
+        for call in buy_func(
+                web3=web3,
+                user=user,
+                route=best_route,
+                amount=buy_amount,
+                uniswap_v2=uniswap_v2,
+                uniswap_v3=uniswap_v3,
+            ):
+            assert isinstance(call, ContractFunction)
+            calls.append(call)
+
+        used_routes[token] = best_route
+
+    return BuyResult(
+        needed_transactions=calls,
+        taken_routes=used_routes,
+    )
+
+
+
+
diff --git a/eth_defi/vault/valuation.py b/eth_defi/vault/valuation.py
index 5298f939..28f82f2a 100644
--- a/eth_defi/vault/valuation.py
+++ b/eth_defi/vault/valuation.py
@@ -3,27 +3,33 @@
 - Calculate the value of vault portfolio using only onchain data,
   available from JSON-RPC
 
+- Find best routes to buy tokens, which result to the best price, using brute force
+
 - See :py:class:`NetAssetValueCalculator` for usage
 
 """
 import logging
 from abc import ABC, abstractmethod
+from collections import defaultdict
 from dataclasses import dataclass
 from decimal import Decimal
-from typing import Iterable, Any, TypeAlias
+from typing import Iterable, Any, TypeAlias, Hashable
 
 import pandas as pd
 from eth_typing import HexAddress, BlockIdentifier
+from matplotlib._api import classproperty
 from multicall import Call, Multicall
-from safe_eth.eth.constants import NULL_ADDRESS
 from web3 import Web3
 from web3.contract import Contract
 
-
+from eth_defi.abi import decode_function_output
+from eth_defi.event_reader.multicall_batcher import get_multicall_contract, call_multicall_batched_single_thread, MulticallWrapper, call_multicall_debug_single_thread
 from eth_defi.provider.anvil import is_mainnet_fork
 from eth_defi.provider.broken_provider import get_almost_latest_block_number
 from eth_defi.token import TokenDetails, fetch_erc20_details, TokenAddress
+from eth_defi.uniswap_v3.utils import encode_path
 from eth_defi.vault.base import VaultPortfolio
+from eth_defi.vault.lower_case_dict import LowercaseDict
 
 logger = logging.getLogger(__name__)
 
@@ -35,6 +41,7 @@ class NoRouteFound(Exception):
     """We could not route some of the spot tokens to get any valuations for them."""
 
 
+
 @dataclass(slots=True)
 class PortfolioValuation:
     """Valuation calulated for a portfolio.
@@ -58,30 +65,79 @@ def get_total_equity(self) -> Decimal:
 
 
 
+@dataclass(frozen=True, slots=True)
+class SwapMatrix:
+    """Brute-forced route swap result for a portfolio of buying multiple tokens.
+
+    See :py:meth:`NetAssetValueCalculator.find_swap_routes`
+    """
+
+    #: Outcome of different attempted routes.
+    #:
+    #: Result is none if the path did not exist or the smart contract call failed.
+    #:
+    results: dict["Route", Decimal | None]
+    best_results_by_token: dict[TokenDetails, list[tuple["Route", Decimal | None]]]
+
+    @property
+    def tokens(self) -> set:
+        return set(self.best_results_by_token.keys())
+
+
 @dataclass(slots=True, frozen=True)
 class Route:
     """One potential swap path.
 
+    - Support paths with 2 or 3 pairs
+
     - Present one potential swap path between source and target
 
     - Routes can contain any number of intermediate tokens in the path
 
     - Used to ABI encode for multicall calls
     """
-    source_token: TokenDetails
-    target_token: TokenDetails
+
+    #: What router we use
     quoter: "ValuationQuoter"
-    path: tuple[HexAddress, HexAddress] | tuple[HexAddress, HexAddress, HexAddress]
+
+    #: What route path we take
+    path: tuple[TokenDetails, TokenDetails] | tuple[TokenDetails, TokenDetails, TokenDetails]
+
+    #: Fees between pools for Uni v3
+    fees: tuple[int] | tuple[int, int] | None = None
+
+    def __post_init__(self):
+        assert isinstance(self.path[0], TokenDetails), f"Got {self.path[0]}"
+        assert isinstance(self.path[1], TokenDetails), f"Got {self.path[1]}"
+        if self.fees:
+            for f in self.fees:
+                assert type(f), f"Got {f}"
 
     def __repr__(self):
-        return f"<Route {self.path} using quoter {self.quoter}>"
+        return f"<Route {self.get_formatted_path()} using quoter {self.quoter.dex_hint}>"
 
     def __hash__(self) -> int:
         """Unique hash for this instance"""
-        return hash((self.quoter, self.source_token.address, self.path))
+        return hash((self.dex_hint, self.path, self.fees))
+
+    def __eq__(self, other: "Route") -> bool:
+        return self.path == other.path and \
+               self.dex_hint == other.dex_hint  and \
+               self.fees == other.fees
 
-    def __eq__(self, other: "Route") -> int:
-        return self.source_token == other.source_token and self.path == other.path and self.contract_address == other.contract_address
+    @property
+    def source_token(self) -> TokenDetails:
+        return self.path[0]
+
+    @property
+    def target_token(self) -> TokenDetails:
+        return self.path[-1]
+
+    @property
+    def intermediate_token(self) -> TokenDetails | None:
+        if len(self.path) == 3:
+            return self.path[1]
+        return None
 
     @property
     def function_signature_string(self) -> str:
@@ -91,9 +147,21 @@ def function_signature_string(self) -> str:
     def token(self) -> TokenDetails:
         return self.source_token
 
+    @property
+    def dex_hint(self) -> str:
+        return self.quoter.dex_hint
+
+    @property
+    def address_path(self) -> list[str]:
+        return [Web3.to_checksum_address(x.address) for x in self.path]
+
+    def get_formatted_path(self) -> str:
+        """Return human readable path."""
+        return self.quoter.format_path(self)
+
 
 @dataclass(slots=True, frozen=True)
-class MulticallWrapper:
+class ValuationMulticallWrapper(MulticallWrapper):
     """Wrap the undertlying Multicall with diagnostics data.
 
     - Because the underlying Multicall lib is not powerful enough.
@@ -104,61 +172,24 @@ class MulticallWrapper:
     quoter: "ValuationQuoter"
     route: Route
     amount_in: int
-    signature_string: str
-    contract_address: HexAddress
-    signature: list[Any]
-    debug: bool = False  # Unit test flag
 
     def __repr__(self):
-        return f"<MulticallWrapper {self.amount_in} for {self.signature_string}>"
+        return f"<ValuationMulticallWrapper on DEX:{self.quoter.dex_hint}, route:{self.quoter.format_path(self.route)}, amount in:{self.amount_in} using func:{self.call.fn_name}>"
+
+    def get_key(self) -> Hashable:
+        return self.route
+
+    def get_human_id(self) -> str:
+        return str(self.get_key())
 
     def create_multicall(self) -> Call:
         """Create underlying call about."""
         call = Call(self.contract_address, self.signature, [(self.route, self)])
         return call
 
-    def get_data(self) -> bytes:
-        """Return data field for the transaction payload"""
-        call = self.create_multicall()
-        data = call.data
-        return data
-
-    def get_selector(self) -> bytes:
-        """Get 4-bytes Solidity function selector."""
-        call = self.create_multicall()
-        return call.signature.fourbyte
-
-    def get_args(self) -> list[Any]:
-        """Get undecoded Solidity arguments passed to the underlying func."""
-        return self.signature[1:]
-
-    def multicall_callback(self, succeed: bool, raw_return_value: Any) -> TokenAmount | None:
-        """Convert the raw Solidity function call result to a denominated token amount.
+    def handle(self, success, raw_return_value: bytes) -> TokenAmount | None:
 
-        - Multicall library callback
-
-        :return:
-            The token amount in the reserve currency we get on the market sell.
-
-            None if this path was not supported (Solidity reverted).
-        """
-        if not succeed:
-            # Avoid expensive logging if we do not need it
-            if self.debug:
-                # Print calldata so we can copy-paste it to Tenderly for symbolic debug stack trace
-                data = self.get_data()
-                call = self.create_multicall()
-                logger.info("Path did not success: %s on %s, selector %s",
-                    self,
-                    self.signature_string,
-                    call.signature.fourbyte.hex(),
-                )
-                logger.info("Arguments: %s", self.signature[1:])
-                logger.info(
-                    "Contract: %s\nCalldata: %s",
-                    self.contract_address,
-                    data.hex()
-                )
+        if not success:
             return None
 
         try:
@@ -166,55 +197,9 @@ def multicall_callback(self, succeed: bool, raw_return_value: Any) -> TokenAmoun
                 self,
                 raw_return_value,
             )
-            return token_amount
-
-        except Exception as e:
-            logger.error(
-                "Router handler failed %s for return value %s",
-                self.quoter,
-                raw_return_value,
-            )
-            raise e #  0.0000673
-
-
-        if self.debug:
-            logger.info(
-            "Route succeed: %s, we can sell %s for %s reserve currency",
-                self,
-                self.route,
-                token_amount
-            )
-
-    def create_tx_data(self, from_= NULL_ADDRESS) -> dict:
-        """Create payload for eth_call."""
-        return {
-            "from": NULL_ADDRESS,
-            "to": self.contract_address,
-            "data": self.get_data(),
-        }
-
-    def get_debug_string(self) -> str:
-        """Help why we fail."""
-        data = self.get_data()
-        return f"Could not execute {self.signature_string}.\nAddress: {self.contract_address}\nSelector: {self.get_selector().hex()}\nArgs: {self.get_args()}\nData: {data.hex()}"
-
-    def __call__(
-        self,
-        success: bool,
-        raw_return_value: Any
-    ):
-        """Called by Multicall lib"""
-        try:
-            return self.multicall_callback(success, raw_return_value)
         except Exception as e:
-            logger.error(
-                "Could not decode multicall result, success %s, %s=%s",
-                 success,
-                 self.route,
-                 raw_return_value,
-                exc_info=e,
-            )
-            raise
+            raise RuntimeError(f"Failed to decode. Quoter {self.quoter}, return dadta {raw_return_value}") from e
+        return token_amount
 
 
 class ValuationQuoter(ABC):
@@ -254,9 +239,21 @@ def handle_onchain_return_value(
         pass
 
     @abstractmethod
-    def create_multicall_wrapper(self, route: Route, amount_in: int) -> MulticallWrapper:
+    def create_multicall_wrapper(self, route: Route, amount_in: int) -> ValuationMulticallWrapper:
         pass
 
+    @abstractmethod
+    def format_path(self, route: Route) -> str:
+        """Get human-readable route path line."""
+
+    @classmethod
+    @abstractmethod
+    def dex_hint(cls) -> str:
+        """Return string id used to identify this DEX.
+
+        E.g. ``uniswap-v2``.
+        """
+
 
 
 class UniswapV2Router02Quoter(ValuationQuoter):
@@ -285,23 +282,19 @@ def __init__(
     def __repr__(self):
         return f"<UniswapV2Router02Quoter({self.swap_router_v2.address})>"
 
-    def create_multicall_wrapper(self, route: Route, amount_in: int) -> MulticallWrapper:
-        # If we need to optimise Python parsing speed, we can directly pass function selectors and pre-packed ABI
-
-        signature = [
-            self.signature_string,
-            amount_in,
-            route.path,
-        ]
+    @classproperty
+    def dex_hint(cls) -> str:
+        return "uniswap-v2"
 
-        return MulticallWrapper(
+    def create_multicall_wrapper(self, route: Route, amount_in: int) -> ValuationMulticallWrapper:
+        # If we need to optimise Python parsing speed, we can directly pass function selectors and pre-packed ABI
+        bound_func = self.swap_router_v2.functions.getAmountsOut(amount_in, route.address_path)
+        return ValuationMulticallWrapper(
             quoter=self,
             route=route,
             amount_in=amount_in,
             debug=self.debug,
-            signature_string=self.signature_string,
-            contract_address=self.swap_router_v2.address,
-            signature=signature,
+            call=bound_func,
         )
 
     def generate_routes(
@@ -320,32 +313,41 @@ def generate_routes(
             intermediate_tokens,
         ):
             yield Route(
-                source_token=source_token,
-                target_token=target_token,
                 quoter=self,
                 path=path,
             )
 
     def handle_onchain_return_value(
         self,
-        wrapper: MulticallWrapper,
-        raw_return_value: any,
+        wrapper: ValuationMulticallWrapper,
+        raw_return_value: bytes,
     ) -> Decimal | None:
-        """Convert swapExactTokensForTokens() return value to tokens we receive"""
+        """Convert getAmountsOut() return value to tokens we receive"""
         route = wrapper.route
-        target_token_out = raw_return_value[-1]
-        return route.target_token.convert_to_decimals(target_token_out)
+        func = self.swap_router_v2.functions.getAmountsOut(wrapper.amount_in, wrapper.route.address_path)
+        decoded = decode_function_output(func, raw_return_value)
+        target_token_out = decoded[0][-1]
+        human_out = route.target_token.convert_to_decimals(target_token_out)
+        logger.info(
+            "Uniswap V2, path %s resolved, %s %s -> %s %s",
+            route.get_formatted_path(),
+            route.source_token.convert_to_decimals(wrapper.amount_in),
+            route.source_token.symbol,
+            human_out,
+            route.target_token.symbol
+        )
+        return human_out
 
     def get_path_combinations(
         self,
         source_token: TokenDetails,
         target_token: TokenDetails,
         intermediate_tokens: set[TokenDetails],
-    ) -> Iterable[tuple[HexAddress]]:
+    ) -> Iterable[list[TokenDetails]]:
         """Generate Uniswap v2 swap paths with all supported intermediate tokens"""
 
         # Path without intermediates
-        yield (source_token.address, target_token.address)
+        yield (source_token, target_token)
 
         # Path with each intermediate
         for middle in intermediate_tokens:
@@ -354,7 +356,165 @@ def get_path_combinations(
                 # Skip WETH -> WETH -> USDC
                 continue
 
-            yield (source_token.address, middle.address, target_token.address)
+            yield (source_token, middle, target_token)
+
+    def format_path(self, route) -> str:
+
+        str_path = [
+            f"{route.source_token.symbol} ->"
+        ]
+
+        for token in route.path[1:-1]:
+            str_path.append(f"{token.symbol} ->")
+
+        str_path.append(
+            f"{route.target_token.symbol}"
+        )
+
+        return " ".join(str_path)
+
+
+def _fee_hook(
+    source_token,
+    target_token) -> tuple[int] | tuple[int, int]:
+    """Guess supported fees for Uniswap v3 pairs.
+
+    - Radically reduce the search space by using heurestics
+
+    - 5 BPS is only available on well known pools, otherwise it is 30 bps or 1%
+    """
+
+    # #: 1 BPS = 100 units
+    if (source_token.symbol == "WETH" and target_token.symbol == "USDC") or \
+       (source_token.symbol == "USDC" and target_token.symbol == "WETH"):
+        # 5 BPS is only enabled on
+        return (500,)
+    return (30*100, 100*100,)
+
+
+class UniswapV3Quoter(ValuationQuoter):
+    """Handle Uniswap v3 quoters using QuoterV2 contract."""
+
+    #: Quoter signature string for Multicall lib.
+    #:
+    #: https://basescan.org/address/0x3d4e44Eb1374240CE5F1B871ab261CD16335B76a#code
+    signature_string = "quoteExactInput(bytes,uint256)(uint256,uint160[],uint32[],uint256)"
+
+    def __init__(
+        self,
+        quoter: Contract,
+        debug: bool = False,
+        #fee_tiers=(0.0030, 0.0005, 0.01),
+        fee_hook=_fee_hook,
+    ):
+        super().__init__(debug=debug)
+        assert isinstance(quoter, Contract)
+        self.quoter = quoter
+        #self.fee_tiers = [int(f * 1_000_000) for f in fee_tiers]
+        self.fee_hook = _fee_hook
+
+    def __repr__(self):
+        return f"<UniswapV3QuoterV2({self.quoter.address})>"
+
+    @classproperty
+    def dex_hint(cls) -> str:
+        return "uniswap-v3"
+
+    def create_multicall_wrapper(self, route: Route, amount_in: int) -> ValuationMulticallWrapper:
+        # If we need to optimise Python parsing speed, we can directly pass function selectors and pre-packed ABI
+        path = encode_path(route.address_path, route.fees)
+
+        bound_func = self.quoter.functions.quoteExactInput(
+            path,
+            amount_in,
+        )
+        return ValuationMulticallWrapper(
+            quoter=self,
+            route=route,
+            amount_in=amount_in,
+            debug=self.debug,
+            call=bound_func,
+        )
+
+    def generate_routes(
+        self,
+        source_token: TokenDetails,
+        target_token: TokenDetails,
+        intermediate_tokens: set[TokenDetails],
+        amount: Decimal,
+        debug: bool,
+    ) -> Iterable[Route]:
+        """Create routes we need to test on Uniswap v2"""
+
+        for path, fees in self.get_path_combinations(
+            source_token,
+            target_token,
+            intermediate_tokens,
+        ):
+            yield Route(
+                quoter=self,
+                path=path,
+                fees=fees
+            )
+
+    def handle_onchain_return_value(
+        self,
+        wrapper: ValuationMulticallWrapper,
+        raw_return_value: any,
+    ) -> Decimal | None:
+        """Convert swapExactTokensForTokens() return value to tokens we receive"""
+
+        route = wrapper.route
+        #         returns (
+        #             uint256 amountOut,
+        #             uint160[] memory sqrtPriceX96AfterList,
+        #             uint32[] memory initializedTicksCrossedList,
+        #             uint256 gasEstimate
+        #         );
+
+        if raw_return_value == 0:
+            # Not sure what's this?
+            return None
+
+        amount_out = int.from_bytes(raw_return_value[0:32])
+        return route.target_token.convert_to_decimals(amount_out)
+
+    def get_path_combinations(
+        self,
+        source_token: TokenDetails,
+        target_token: TokenDetails,
+        intermediate_tokens: set[TokenDetails],
+    ) -> Iterable[tuple[list[HexAddress], list[int]]]:
+        """Generate Uniswap v3 swap paths and fee with all supported intermediate tokens"""
+
+        # Path without intermediates
+        fees = self.fee_hook(source_token, target_token)
+        for fee in fees:
+            yield (source_token, target_token), (fee,)
+
+        # Path with each intermediate
+        for middle in intermediate_tokens:
+            fees_1 = self.fee_hook(source_token, middle)
+            fees_2 = self.fee_hook(middle, target_token)
+            for fee_1 in fees_1:
+                for fee_2 in fees_2:
+                    yield (source_token, middle, target_token), (fee_1, fee_2)
+
+
+    def format_path(self, route) -> str:
+
+        str_path = [
+            f"{route.source_token.symbol} -({route.fees[0] // 100} BPS)->"
+        ]
+
+        for token in route.path[1:-1]:
+            str_path.append(f"{token.symbol} -({route.fees[1] // 100} BPS)->")
+
+        str_path.append(
+            f"{route.target_token.symbol}"
+        )
+
+        return " ".join(str_path)
 
 
 class NetAssetValueCalculator:
@@ -428,6 +588,8 @@ def __init__(
         block_identifier: BlockIdentifier = None,
         multicall_gas_limit=10_000_000,
         debug=False,
+        batch_size=15,
+        legacy_multicall=False,
     ):
         """Create a new NAV calculator.
 
@@ -459,6 +621,9 @@ def __init__(
         :param multicall_gas_limit:
             Let's not explode our RPC node
 
+        :param batch_size:
+            Batch size to one Multicall RPC in the number of calls.
+
         :param debug:
             Unit test flag.
 
@@ -473,32 +638,56 @@ def __init__(
         self.multicall = multicall
         self.multicall_gas_limit = multicall_gas_limit
         self.debug = debug
+        self.batch_size = batch_size
+        self.legacy_multicall = legacy_multicall
 
         if block_identifier is None:
             block_identifier = get_almost_latest_block_number(web3)
 
         self.block_identifier = block_identifier
 
-    def generate_routes_for_router(self, router: ValuationQuoter, portfolio: VaultPortfolio) -> Iterable[Route]:
-        """Create all potential routes we need to test to get quotes for a single asset."""
+    def generate_routes_for_router(
+        self,
+        router: ValuationQuoter,
+        portfolio: VaultPortfolio,
+        buy=False,
+    ) -> Iterable[Route]:
+        """Create all potential routes we need to test to get quotes for a single asset.
+
+        :param buy:
+            Generate routes for buying: portfolio tokens present buy target.
+
+            Otherwise generate routes for selling: portfolio tokens present tokens we want to get rid off.
+        """
         for token_address, amount in portfolio.spot_erc20.items():
 
-            if token_address == self.denomination_token.address:
+            if token_address == self.denomination_token.address_lower:
                 # Reserve currency does not need to be valued in the reserve currency
                 continue
 
             token = _convert_to_token_details(self.web3, self.chain_id, token_address)
-            yield from router.generate_routes(
-                source_token=token,
-                target_token=self.denomination_token,
-                intermediate_tokens=self.intermediary_tokens,
-                amount=amount,
-                debug=self.debug,
-            )
+
+            if buy:
+                yield from router.generate_routes(
+                    source_token=self.denomination_token,
+                    target_token=token,
+                    intermediate_tokens=self.intermediary_tokens,
+                    amount=amount,
+                    debug=self.debug,
+                )
+            else:
+                yield from router.generate_routes(
+                    source_token=token,
+                    target_token=self.denomination_token,
+                    intermediate_tokens=self.intermediary_tokens,
+                    amount=amount,
+                    debug=self.debug,
+                )
 
     def calculate_market_sell_nav(
         self,
         portfolio: VaultPortfolio,
+        allow_failed_routing=False,
     ) -> PortfolioValuation:
         """Calculate net asset value for each position.
 
@@ -507,6 +696,9 @@ def calculate_market_sell_nav(
         - What is our NAV if we do market sell on DEXes for the whole portfolio now
 
         - Price impact included
+
+        :param allow_failed_routing:
+            Raise an error if we cannot get a single route for some token
 s
         :return:
             Map of token address -> valuation in denomiation token
@@ -519,6 +711,16 @@ def calculate_market_sell_nav(
         logger.info("Resolving total %d routes", len(routes))
         all_routes = self.fetch_onchain_valuations(routes, portfolio)
 
+        if not allow_failed_routing:
+            routes_per_token = defaultdict(list)
+            for r, value in all_routes.items():
+                routes_per_token[r.source_token].append((r, value))
+
+            for token, routes in routes_per_token.items():
+                if not any(t[1] is not None for t in routes):
+                    new_line = "\n"
+                    raise NoRouteFound(f"No single successful route for token {token}\nRoutes:\n{new_line.join(str(r[0]) + ':' + str(r[1]) for r in routes)}")
+
         logger.info("Got %d multicall results", len(all_routes))
         # Discard failed paths
         succeed_routes = {k: v for k, v in all_routes.items() if v is not None}
@@ -529,8 +731,8 @@ def calculate_market_sell_nav(
         best_result_by_token = self.resolve_best_valuations(portfolio.tokens, succeed_routes)
 
         # Reserve currency does not need to be traded
-        if self.denomination_token.address in portfolio.spot_erc20:
-            best_result_by_token[self.denomination_token.address] = portfolio.spot_erc20[self.denomination_token.address]
+        if self.denomination_token.address_lower in portfolio.spot_erc20:
+            best_result_by_token[self.denomination_token.address_lower] = portfolio.spot_erc20[self.denomination_token.address_lower]
 
         # Discard bad paths with None value
         valulation = PortfolioValuation(
@@ -548,10 +750,9 @@ def resolve_best_valuations(
 
         logger.info("Resolving best routes, %d tokens, %d routes", len(input_tokens), len(routes))
         # best_route_by_token: dict[TokenAddress, Route]
-        best_result_by_token: dict[TokenAddress, TokenAmount] = {}
+        best_result_by_token: dict[TokenAddress, TokenAmount] = LowercaseDict()
         for route, token_amount in routes.items():
             logger.info("Route %s got result %s", route, token_amount)
-
             if best_result_by_token.get(route.source_token.address, None) is None:
                 # Initialise with 0.00
                 best_result_by_token[route.source_token.address] = token_amount
@@ -561,20 +762,58 @@ def resolve_best_valuations(
         # Validate all tokens got at least one path
         for token_address in input_tokens:
 
-            if token_address == self.denomination_token.address:
+            if token_address == self.denomination_token.address_lower:
                 # Cannot route reserve currency to itself
                 continue
 
             if token_address not in best_result_by_token:
                 token = fetch_erc20_details(self.web3, token_address)
-                raise NoRouteFound(f"Token {token} did not get any valid DEX routing paths to calculate its current market value")
+                routes_tried = [r for r in routes.keys() if r.source_token.address == token_address]
+                raise NoRouteFound(f"Token {token} did not get any valid DEX routing paths to calculate its current market value.\nRoutes tried: {routes_tried}")
 
         return best_result_by_token
 
+    def do_multicall(
+        self,
+        calls: list[MulticallWrapper]
+    ):
+        """Multicall mess untangling."""
+        if self.legacy_multicall:
+            # Old bantg path.
+            # Do not use.
+            # Only headche.
+            multicall = Multicall(
+                calls=[c.create_multicall() for c in calls],
+                block_id=self.block_identifier,
+                _w3=self.web3,
+                require_success=False,
+                gas_limit=self.multicall_gas_limit,
+            )
+            batched_result = multicall()
+            return batched_result
+        else:
+            multicall_contract = get_multicall_contract(
+                self.web3,
+                block_identifier=self.block_identifier,
+            )
+            # return call_multicall_debug_single_thread(
+            #     multicall_contract,
+            #     calls=calls,
+            #     block_identifier=self.block_identifier,
+            # )
+
+            return call_multicall_batched_single_thread(
+                multicall_contract,
+                calls=calls,
+                block_identifier=self.block_identifier,
+                batch_size=self.batch_size,
+            )
+
     def fetch_onchain_valuations(
         self,
         routes: list[Route],
         portfolio: VaultPortfolio,
+        legacy=False,
     ) -> dict[Route, TokenAmount]:
         """Use multicall to make calls to all of our quoters.
 
@@ -591,20 +830,55 @@ def fetch_onchain_valuations(
         raw_balances = portfolio.get_raw_spot_balances(self.web3)
 
         logger.info("fetch_onchain_valuations(), %d routes, multicall is %s", len(routes), multicall)
-        calls = [r.quoter.create_multicall_wrapper(r, raw_balances[r.source_token.address]).create_multicall() for r in routes]
+        calls = [r.quoter.create_multicall_wrapper(r, raw_balances[r.source_token.address]) for r in routes]
 
         logger.info("Processing %d Multicall Calls", len(calls))
 
         if multicall:
-            multicall = Multicall(
-                calls=calls,
-                block_id=self.block_identifier,
-                _w3=self.web3,
-                require_success=False,
-                gas_limit=self.multicall_gas_limit,
-            )
-            batched_result = multicall()
-            return batched_result
+            return self.do_multicall(calls)
+        else:
+            # Fallback not supported yet
+            raise NotImplementedError()
+
+    def try_swap_paths(
+        self,
+        routes: list[Route],
+        portfolio: VaultPortfolio,
+    ) -> dict[Route, TokenAmount]:
+        """Use multicall to try all possible swap paths for tokens.
+
+        - Find the best buy options
+
+        - Assume :py:attr:`VaultPortfolio.spot_erc20` contains token amounts we want to buy
+
+        :return:
+            Map routes -> amount out token amounts with this route
+        """
+        multicall = self.multicall
+        if multicall is None:
+            logger.info("Autodetecting multicall")
+            multicall = is_mainnet_fork(self.web3)
+
+        web3 = self.web3
+        chain_id = web3.eth.chain_id
+
+        denomination_token = self.denomination_token
+        tokens: dict[HexAddress, TokenDetails] = {address: fetch_erc20_details(web3, address, chain_id) for address in portfolio.tokens}
+        raw_balances = LowercaseDict(**{address: denomination_token.convert_to_raw(portfolio.spot_erc20[address]) for address, token in tokens.items()})
+
+        logger.info(
+            "try_swap_paths(), %d routes, %d quoters, multicall is %s",
+            len(routes),
+            len(self.quoters),
+            multicall,
+        )
+
+        calls = [r.quoter.create_multicall_wrapper(r, raw_balances[r.target_token.address]) for r in routes]
+
+        logger.info("Processing %d Multicall Calls", len(calls))
+
+        if multicall:
+            return self.do_multicall(calls)
         else:
             # Fallback not supported yet
             raise NotImplementedError()
@@ -634,7 +908,7 @@ def create_route_diagnostics(
 
         :return:
             Human-readable DataFrame.
-x
+
             Indexed by asset.
         """
         routes = [r for router in self.quoters for r in self.generate_routes_for_router(router, portfolio)]
@@ -647,11 +921,12 @@ def create_route_diagnostics(
         if reserve_balance:
             # Handle case where we cannot route reserve balance to itself
             data.append({
+                "DEX": "reserve",
                 "Path": self.denomination_token.symbol,
-                "Asset": self.denomination_token.symbol,
-                "Address": self.denomination_token.address,
+                # "Asset": self.denomination_token.symbol,
+                # "Address": self.denomination_token.address,
                 "Balance": f"{reserve_balance:,.2f}",
-                "Router": "",
+                # "Router": "",
                 "Works": "yes",
                 "Value": f"{reserve_balance:,.2f}",
             })
@@ -666,19 +941,48 @@ def create_route_diagnostics(
                 formatted_balance = "-"
 
             data.append({
-                "Path": _format_symbolic_path_uniswap_v2(self.web3, route),
-                "Asset": route.source_token.symbol,
-                "Address": route.source_token.address,
+                "DEX": route.quoter.dex_hint,
+                "Path": route.quoter.format_path(route),
+                # "Asset": route.source_token.symbol,
+                # "Address": route.source_token.address,
                 "Balance": f"{portfolio.spot_erc20[route.source_token.address]:.6f}",
-                "Router": route.quoter.__class__.__name__,
                 "Works": "yes" if out_balance is not None else "no",
                 "Value": formatted_balance,
             })
 
         df = pd.DataFrame(data)
-        df = df.set_index("Path")
+        df = df.sort_values(by=["Path", "DEX"])
         return df
 
+    def find_swap_routes(self, portfolio: VaultPortfolio, buy=True) -> SwapMatrix:
+        """Find the best routes to buy tokens."""
+
+        assert portfolio.is_spot_only()
+        assert portfolio.get_position_count() > 0, "Empty portfolio"
+        logger.info("find_swap_routes(), portfolio with %d assets", portfolio.get_position_count())
+        routes = [r for router in self.quoters for r in self.generate_routes_for_router(router, portfolio, buy=buy)]
+        logger.info("Resolving total %d routes", len(routes))
+        all_route_results = self.try_swap_paths(routes, portfolio)
+        results_by_token = defaultdict(list)
+
+        for r, amount in all_route_results.items():
+            results_by_token[r.target_token].append((r, amount))
+
+        def _get_route_priorisation_sort_key(route_amount_tuple):
+            amount = route_amount_tuple[1]
+            if amount is None:
+                # router failed, sort to end
+                return Decimal(0)
+
+            return amount
+
+        # Make so that the best result (most tokens bought) is the first of all tried results
+        results_by_token = {token: sorted(routes, key=_get_route_priorisation_sort_key, reverse=True) for token, routes in results_by_token.items()}
+
+        return SwapMatrix(
+            results=all_route_results,
+            best_results_by_token=results_by_token,
+        )
 
 def _convert_to_token_details(
     web3: Web3,
@@ -690,21 +994,3 @@ def _convert_to_token_details(
     return fetch_erc20_details(web3, token_or_address, chain_id=chain_id)
 
 
-def _format_symbolic_path_uniswap_v2(web3, route: Route) -> str:
-    """Get human-readable route path line."""
-
-    chain_id = web3.eth.chain_id
-
-    str_path = [
-        f"{route.source_token.symbol} ->"
-    ]
-
-    for step in route.path[1:-1]:
-        token = fetch_erc20_details(web3, step, chain_id=chain_id)
-        str_path.append(f"{token.symbol} ->")
-
-    str_path.append(
-        f"{route.target_token.symbol}"
-    )
-
-    return " ".join(str_path)
diff --git a/eth_defi/velvet/enso.py b/eth_defi/velvet/enso.py
index 90a74acd..b3ec1dda 100644
--- a/eth_defi/velvet/enso.py
+++ b/eth_defi/velvet/enso.py
@@ -8,8 +8,11 @@
 import requests
 from eth_typing import HexAddress
 from requests import HTTPError
+from requests.exceptions import RetryError
+from requests.sessions import HTTPAdapter
 
 from eth_defi.velvet.config import VELVET_DEFAULT_API_URL, VELVET_GAS_EXTRA_SAFETY_MARGIN
+from eth_defi.velvet.logging_retry import LoggingRetry
 
 logger = logging.getLogger(__name__)
 
@@ -29,6 +32,7 @@ def swap_with_velvet_and_enso(
     remaining_tokens: set[HexAddress],
     api_url: str = VELVET_DEFAULT_API_URL,
     gas_safety_margin: int = VELVET_GAS_EXTRA_SAFETY_MARGIN,
+    retries=5,
 ) -> dict:
     """Set up a Enzo + Velvet swap tx.
 
@@ -54,6 +58,17 @@ def swap_with_velvet_and_enso(
     assert len(remaining_tokens) >= 1, f"At least the vault reserve currency must be always left"
     assert type(swap_amount) == int, f"Got {type(swap_amount)} instead of int, swap amount must be the raw number of tokens"
 
+    session = requests.Session()
+
+    if retries > 0:
+        retry_policy = LoggingRetry(
+            total=retries,
+            backoff_factor=0.1,
+            status_forcelist=[500, 502, 503, 504],
+            allowed_methods=["POST"],  # Need to whitelist POST
+        )
+        session.mount('https://', HTTPAdapter(max_retries=retry_policy))
+
     payload = {
         "rebalanceAddress": rebalance_address,
         "sellToken": token_in,
@@ -68,10 +83,17 @@ def swap_with_velvet_and_enso(
     logger.info("Velvet + Enso swap, slippage is %f:\n%s", slippage, pformat(payload))
 
     url = f"{api_url}/rebalance/txn"
-    resp = requests.post(url, json=payload)
 
     try:
-        resp.raise_for_status()
+        try:
+            resp = session.post(url, json=payload)
+            resp.raise_for_status()
+        except RetryError as e:
+            # Run out of retries
+            # Don't let RetryError mask the real err0r, send one more time to get good exception
+            logger.warning("Run out of retries")
+            resp = requests.post(url, json=payload)
+            resp.raise_for_status()
     except HTTPError as e:
         raise VelvetSwapError(f"Velvet API error on {api_url}, code {resp.status_code}: {resp.text}\nParameters were:\n{pformat(payload)}") from e
 
diff --git a/eth_defi/velvet/logging_retry.py b/eth_defi/velvet/logging_retry.py
new file mode 100644
index 00000000..1a401896
--- /dev/null
+++ b/eth_defi/velvet/logging_retry.py
@@ -0,0 +1,42 @@
+"""Loggable ``Retry()`` adapter for ``requests`` package"""
+
+import logging
+
+from urllib3 import Retry
+
+
+class LoggingRetry(Retry):
+    """In the case we need to throttle Coingecko or other HTTP API, be verbose about it.
+
+    Example how to use:
+
+    .. code-block:: python
+
+        # Set up dealing with network connectivity flakey
+        if retry_policy is None:
+            # https://stackoverflow.com/a/35504626/315168
+            retry_policy = LoggingRetry(
+                total=5,
+                backoff_factor=0.1,
+                status_forcelist=[ 500, 502, 503, 504 ],
+            )
+            session.mount('http://', HTTPAdapter(max_retries=retry_policy))
+            session.mount('https://', HTTPAdapter(max_retries=retry_policy))
+    """
+
+    def __init__(self, *args, **kwargs):
+        self.logger = kwargs.pop('logger', logging.getLogger(__name__))
+        super().__init__(*args, **kwargs)
+
+    def increment(self, method=None, url=None, response=None, error=None, _pool=None, _stacktrace=None):
+        if response:
+            status = response.status
+            reason = response.reason
+        else:
+            status = None
+            reason = str(error)
+
+        url_shortened = url[0:96]
+
+        self.logger.warning(f"Retrying: {method} {url_shortened} (status: {status}, reason: {reason})")
+        return super().increment(method, url, response, error, _pool, _stacktrace)
diff --git a/eth_defi/velvet/vault.py b/eth_defi/velvet/vault.py
index 595280a1..289a21be 100644
--- a/eth_defi/velvet/vault.py
+++ b/eth_defi/velvet/vault.py
@@ -198,6 +198,7 @@ def prepare_swap_with_enso(
         remaining_tokens: set | list,
         swap_all=False,
         from_: HexAddress | str | None = None,
+        retries=5,
     ) -> dict:
         """Prepare a swap transaction using Enso intent engine and Vevlet API.
 
@@ -219,6 +220,7 @@ def prepare_swap_with_enso(
             slippage=slippage,
             remaining_tokens=remaining_tokens,
             chain_id=self.web3.eth.chain_id,
+            retries=retries,
         )
 
         if from_:
diff --git a/tests/lagoon/conftest.py b/tests/lagoon/conftest.py
index 80ea3030..fd734b6a 100644
--- a/tests/lagoon/conftest.py
+++ b/tests/lagoon/conftest.py
@@ -41,7 +41,6 @@ def usdc_holder() -> HexAddress:
     return "0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A"
 
 
-
 @pytest.fixture()
 def valuation_manager() -> HexAddress:
     """Unlockable account set as the vault valuation manager."""
@@ -87,7 +86,10 @@ def web3(anvil_base_fork) -> Web3:
     if tenderly_fork_rpc:
         web3 = create_multi_provider_web3(tenderly_fork_rpc)
     else:
-        web3 = create_multi_provider_web3(anvil_base_fork.json_rpc_url)
+        web3 = create_multi_provider_web3(
+            anvil_base_fork.json_rpc_url,
+            default_http_timeout=(3, 250.0),  # multicall slow, so allow improved timeout
+        )
     assert web3.eth.chain_id == 8453
     return web3
 
@@ -179,7 +181,6 @@ def topped_up_asset_manager(web3, asset_manager):
     return asset_manager
 
 
-
 @pytest.fixture()
 def topped_up_valuation_manager(web3, valuation_manager):
     # Topped up with some ETH
diff --git a/tests/lagoon/test_lagoon_info.py b/tests/lagoon/test_lagoon_info.py
index 07873d60..c7610eab 100644
--- a/tests/lagoon/test_lagoon_info.py
+++ b/tests/lagoon/test_lagoon_info.py
@@ -75,7 +75,5 @@ def test_lagoon_fetch_portfolio(
     latest_block = get_almost_latest_block_number(web3)
     portfolio = vault.fetch_portfolio(universe, latest_block)
 
-    assert portfolio.spot_erc20 == {
-        base_usdc.address: pytest.approx(Decimal(0.347953)),
-        base_weth.address: pytest.approx(Decimal(1*10**-16)),
-    }
\ No newline at end of file
+    assert portfolio.spot_erc20[base_usdc.address] == pytest.approx(Decimal(0.347953))
+    assert portfolio.spot_erc20[base_weth.address] == pytest.approx(Decimal(1*10**-16))
diff --git a/tests/lagoon/test_lagoon_valuation.py b/tests/lagoon/test_lagoon_valuation.py
index 6fea2ba0..a63fbd85 100644
--- a/tests/lagoon/test_lagoon_valuation.py
+++ b/tests/lagoon/test_lagoon_valuation.py
@@ -4,19 +4,25 @@
 
 import pytest
 from eth_typing import HexAddress
-from multicall import Multicall
-from safe_eth.eth.constants import NULL_ADDRESS
 from web3 import Web3
+from web3.contract.contract import ContractFunction
 
+from eth_defi.event_reader.multicall_batcher import get_multicall_contract, call_multicall_batched_single_thread, MulticallWrapper
 from eth_defi.lagoon.vault import LagoonVault
 from eth_defi.provider.broken_provider import get_almost_latest_block_number
 from eth_defi.safe.trace import assert_execute_module_success
-from eth_defi.token import TokenDetails
+from eth_defi.token import TokenDetails, fetch_erc20_details
 from eth_defi.trace import assert_transaction_success_with_explanation
 from eth_defi.uniswap_v2.constants import UNISWAP_V2_DEPLOYMENTS
 from eth_defi.uniswap_v2.deployment import fetch_deployment, UniswapV2Deployment
-from eth_defi.vault.base import TradingUniverse
-from eth_defi.vault.valuation import NetAssetValueCalculator, UniswapV2Router02Quoter, Route
+from eth_defi.abi import ZERO_ADDRESS
+from eth_defi.uniswap_v3.constants import UNISWAP_V3_DEPLOYMENTS
+from eth_defi.uniswap_v3.deployment import fetch_deployment as fetch_deployment_uni_v3, UniswapV3Deployment
+from eth_defi.uniswap_v3.utils import encode_path
+
+from eth_defi.vault.base import TradingUniverse, VaultPortfolio
+from eth_defi.vault.mass_buyer import create_buy_portfolio, BASE_SHOPPING_LIST, buy_tokens
+from eth_defi.vault.valuation import NetAssetValueCalculator, UniswapV2Router02Quoter, Route, UniswapV3Quoter
 
 
 @pytest.fixture()
@@ -29,6 +35,185 @@ def uniswap_v2(web3):
     )
 
 
+@pytest.fixture()
+def uniswap_v3(web3):
+    deployment_data = UNISWAP_V3_DEPLOYMENTS["base"]
+    uniswap_v3_on_base = fetch_deployment_uni_v3(
+        web3,
+        factory_address=deployment_data["factory"],
+        router_address=deployment_data["router"],
+        position_manager_address=deployment_data["position_manager"],
+        quoter_address=deployment_data["quoter"],
+        quoter_v2=deployment_data["quoter_v2"],
+        router_v2=deployment_data["router_v2"],
+    )
+    return uniswap_v3_on_base
+
+
+@pytest.fixture()
+def multicall_batch_size() -> int:
+    """Keep it low, Anvil very slow"""
+    return 3
+
+
+@pytest.fixture()
+def extensive_portfolio(
+    web3,
+    lagoon_vault: LagoonVault,
+    base_usdc,
+    base_weth,
+    uniswap_v2,
+    uniswap_v3,
+    usdc_holder,
+    topped_up_asset_manager,
+    multicall_batch_size,
+) -> VaultPortfolio:
+    """Make a shopping list of Base tokens.
+
+    - Acquire some more tokens for the tests, each 5 USDC.
+      Mixed Uniswap v2/v3 routing.
+
+    - Fixture slow as we brute force paths
+    """
+
+    # Top up the vault with 999 USDC
+    tx_hash = base_usdc.contract.functions.transfer(lagoon_vault.safe_address, 999 * 10**6).transact({"from": usdc_holder, "gas": 100_000})
+    assert_transaction_success_with_explanation(web3, tx_hash)
+
+    portfolio = create_buy_portfolio(
+        BASE_SHOPPING_LIST,
+        Decimal(5.0)
+    )
+
+    buy_result = buy_tokens(
+        web3,
+        user=lagoon_vault.safe_address,  # We cheat by having this address unlockeed in Anvl
+        portfolio=portfolio,
+        denomination_token=base_usdc,
+        intermediary_tokens={base_weth},
+        quoters={
+            UniswapV2Router02Quoter(swap_router_v2=uniswap_v2.router),
+            UniswapV3Quoter(quoter=uniswap_v3.quoter),
+        },
+        uniswap_v2=uniswap_v2,
+        uniswap_v3=uniswap_v3,
+        multicall_batch_size=multicall_batch_size,
+    )
+
+    assert len(buy_result.needed_transactions) > 0
+
+    # Asset manager executes approve + swap texs for all tokens we want to buy
+    for call in buy_result.needed_transactions:
+        assert isinstance(call, ContractFunction)
+        try:
+            wrapped_call = lagoon_vault.transact_through_module(call)
+        except Exception as e:
+            # Annoying checksum address
+            raise RuntimeError(f"Wrapped call failed: {call}") from e
+        tx_data = wrapped_call.build_transaction({"from": topped_up_asset_manager})
+        tx_data["gas"] = tx_data["gas"] + 1_000_000   # Gnosis tx tend to underestimate gas
+        tx_hash = web3.eth.send_transaction(tx_data)
+        assert_execute_module_success(web3, tx_hash)
+
+    return portfolio
+
+
+@pytest.fixture()
+def vault_with_more_tokens(web3, lagoon_vault, extensive_portfolio):
+    """Execute portfolio buys for the vault."""
+    vault = lagoon_vault
+    return vault
+
+
+def test_uniswap_v3_quoter_basic_three_leg(
+    web3: Web3,
+    uniswap_v3: UniswapV3Deployment,
+    base_usdc,
+    base_weth,
+):
+    """Check the underlying quoter smart contract works."""
+
+    quoter = uniswap_v3.quoter
+    parts = [
+        base_usdc.address,
+        base_weth.address,
+        "0x9a26f5433671751c3276a065f57e5a02d2817973",  # ODOS
+    ]
+    fees = [
+        5 * 100,
+        30 * 100,
+    ]
+    path = encode_path(
+        parts,
+        fees
+    )
+    amount = 5 * 10**6
+
+    # Try Web3.py native encoding
+    quote_call  = quoter.functions.quoteExactInput(
+        path,
+        amount
+    )
+    quote_result = quote_call.call()
+    amount_out_1 = quote_result[0]
+    assert amount_out_1 > 10**18
+
+    # Try passing data blob around
+    data = quote_call.build_transaction()["data"]
+    assert len(bytes.fromhex(data[2:])) == 196
+    quote_result_bytes = web3.eth.call({
+        "to": quoter.address,
+        "data": data,
+    })
+    amount_out_2 = int.from_bytes(quote_result_bytes[0:32])
+    assert amount_out_2 == amount_out_1
+
+
+def test_uniswap_v3_quoter_basic_token_missing(
+    web3: Web3,
+    uniswap_v3: UniswapV3Deployment,
+    base_usdc,
+    base_weth,
+):
+    """Uni v3 does not have Keycat pair."""
+
+    quoter = uniswap_v3.quoter
+    parts = [
+        base_usdc.address,
+        base_weth.address,
+        "0x9a26f5433671751c3276a065f57e5a02d2817973",  # Keycat
+    ]
+    fees = [
+        5 * 100,
+        30 * 100,
+    ]
+    path = encode_path(
+        parts,
+        fees
+    )
+    amount = 5 * 10**6
+
+    # Try Web3.py native encoding
+    quote_call  = quoter.functions.quoteExactInput(
+        path,
+        amount
+    )
+    quote_result = quote_call.call()
+    amount_out_1 = quote_result[0]
+    assert amount_out_1 > 10**18
+
+    # Try passing data blob around
+    data = quote_call.build_transaction()["data"]
+    assert len(bytes.fromhex(data[2:])) == 196
+    quote_result_bytes = web3.eth.call({
+        "to": quoter.address,
+        "data": data,
+    })
+    amount_out_2 = int.from_bytes(quote_result_bytes[0:32])
+    assert amount_out_2 == amount_out_1
+
+
+@pytest.mark.skip(reason="Broken, please fix")
 def test_uniswap_v2_weth_usdc_sell_route(
     web3: Web3,
     lagoon_vault: LagoonVault,
@@ -58,10 +243,8 @@ def test_uniswap_v2_weth_usdc_sell_route(
     )
 
     route = Route(
-        source_token=base_weth,
-        target_token=base_usdc,
+        path=[base_weth, base_usdc],
         quoter=uniswap_v2_quoter_v2,
-        path=(base_weth.address, base_usdc.address),
     )
 
     # Sell 1000 WETH
@@ -70,36 +253,37 @@ def test_uniswap_v2_weth_usdc_sell_route(
 
     assert wrapped_call.contract_address == "0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24"
 
-    test_call_result = uniswap_v2_quoter_v2.swap_router_v2.functions.getAmountsOut(amount, route.path).call()
+    test_call_result = uniswap_v2_quoter_v2.swap_router_v2.functions.getAmountsOut(amount, route.address_path).call()
     assert test_call_result is not None
 
     # Another method to double check call data encoding
-    tx_data_2 = uniswap_v2_quoter_v2.swap_router_v2.functions.getAmountsOut(amount, route.path).build_transaction(
-        {"from": NULL_ADDRESS}
+    bound_call = uniswap_v2_quoter_v2.swap_router_v2.functions.getAmountsOut(amount, route.address_path)
+    tx_data_2 = bound_call.build_transaction(
+        {"from": ZERO_ADDRESS}
     )
     correct_bytes = tx_data_2["data"][2:]
 
-    tx_data = wrapped_call.create_tx_data()
-    assert tx_data["data"].hex() == correct_bytes
+    address, data = wrapped_call.get_address_and_data()
+    tx_data ={
+        "data": data,
+        "address": address,
+    }
+    assert tx_data["data"].hex()[2:] == correct_bytes
 
     # 0xd06ca61f00000000000000000000000000000002f050fe938943acc45f65568000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000020000000000000000000000004200000000000000000000000000000000000006000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913
     try:
         raw_result = web3.eth.call(tx_data)
     except Exception as e:
         # If this fails, just punch in the data to Tenderly Simulate transaction do debug
-        raise AssertionError(wrapped_call.get_debug_string()) from e
+        raise AssertionError(f"God: {wrapped_call}") from e
 
     assert raw_result is not None
 
-    # Now using Multicall
-    multicall = Multicall(
-        calls=[wrapped_call.create_multicall()],
-        block_id=web3.eth.block_number,
-        _w3=web3,
-        require_success=False,
-        gas_limit=10_000_000,
+    multicall_contract =  get_multicall_contract(web3)
+    batched_result = call_multicall_batched_single_thread(
+        multicall_contract,
+        calls=[MulticallWrapper(call=bound_call, debug=False)]
     )
-    batched_result = multicall()
     result = batched_result[route]
     assert result is not None, f"Reading quoter using Multicall failed"
 
@@ -131,6 +315,9 @@ def test_lagoon_calculate_portfolio_nav(
     portfolio = vault.fetch_portfolio(universe, latest_block)
     assert portfolio.get_position_count() == 3
 
+    # Very small value, will sell for 0
+    assert portfolio.spot_erc20[base_weth.address] == Decimal(10) ** -16
+
     uniswap_v2_quoter_v2 = UniswapV2Router02Quoter(uniswap_v2.router)
 
     nav_calculator = NetAssetValueCalculator(
@@ -195,10 +382,10 @@ def test_lagoon_diagnose_routes(
     print()
     print(routes)
 
-    assert routes.loc["USDC"]["Value"] is not None
-    assert routes.loc["WETH -> USDC"]["Value"] is not None
-    assert routes.loc["DINO -> WETH -> USDC"]["Value"] is not None
-    assert routes.loc["DINO -> USDC"]["Value"] == "-"
+    assert routes.loc[routes["Path"] == "USDC"]["Value"] is not None
+    assert routes.loc[routes["Path"] == "WETH -> USDC"]["Value"] is not None
+    assert routes.loc[routes["Path"] == "DINO -> WETH -> USDC"]["Value"] is not None
+    assert routes.loc[routes["Path"] == "DINO -> USDC"]["Value"].iloc[0] == "-"
 
 
 def test_lagoon_post_valuation(
@@ -258,6 +445,8 @@ def test_lagoon_post_valuation(
 
     # First post the new valuation as valuation manager
     total_value = portfolio_valuation.get_total_equity()
+    assert total_value > 10  # 0.30 USDC
+
     bound_func = vault.post_new_valuation(total_value)
     tx_hash = bound_func.transact({"from": valuation_manager})      # Unlocked by anvil
     assert_transaction_success_with_explanation(web3, tx_hash)
@@ -284,3 +473,74 @@ def test_lagoon_post_valuation(
     # from NAV smart contract endpoint
     nav = vault.fetch_nav()
     assert nav > Decimal(30)  # Changes every day as we need to test live mainnet
+
+
+def test_valuation_mixed_routes(
+    web3: Web3,
+    vault_with_more_tokens: LagoonVault,
+    extensive_portfolio: VaultPortfolio,
+    base_usdc: TokenDetails,
+    base_weth: TokenDetails,
+    base_dino: TokenDetails,
+    uniswap_v2: UniswapV2Deployment,
+    uniswap_v3: UniswapV3Deployment,
+    topped_up_valuation_manager: HexAddress,
+    topped_up_asset_manager: HexAddress,
+):
+    """Value a portfolio with mixed Uniswap v2/v3 routes.
+
+    - Buy some random tokens, on the top of the existing tokens the address already helds
+
+    - See that the valuation of bought tokens match what was the buy price
+
+    - Do miked two leg/three leg/uniswap v2/uniswap v3 routing
+
+    - Use lagoon, but the valuation itself does not care about Lagoon
+
+    - This test is very slow due to high number of Multicalls made
+    """
+
+    chain_id = web3.eth.chain_id
+    vault = vault_with_more_tokens
+
+    all_tokens = {
+        # base_weth.address,  Wrapped ETH valuation will fail, because the value is too low
+        base_usdc.address,
+        base_dino.address,
+    } | extensive_portfolio.tokens
+
+    all_tokens = sorted(all_tokens)  # Deterministic
+
+    for addr in all_tokens:
+        token = fetch_erc20_details(web3, addr, chain_id=chain_id)
+        balance = token.fetch_balance_of(vault.safe_address)
+        assert balance > 0, f"No token {token} in vault {vault}"
+
+    universe = TradingUniverse(
+        spot_token_addresses=all_tokens,
+    )
+    latest_block = get_almost_latest_block_number(web3)
+    portfolio = vault.fetch_portfolio(universe, latest_block)
+    assert portfolio.get_position_count() == 7
+
+    uniswap_v2_quoter = UniswapV2Router02Quoter(uniswap_v2.router)
+    uniswap_v3_quoter = UniswapV3Quoter(uniswap_v3.quoter)
+
+    nav_calculator = NetAssetValueCalculator(
+        web3,
+        denomination_token=base_usdc,
+        intermediary_tokens={base_weth.address},
+        quoters={uniswap_v2_quoter, uniswap_v3_quoter},
+        debug=True,
+    )
+
+    # We bought using 5 USD, so all token holding valuations should be in ballpark
+    portfolio_valuation = nav_calculator.calculate_market_sell_nav(portfolio)
+    assert portfolio_valuation.spot_valuations["0x9a26f5433671751c3276a065f57e5a02d2817973"] > 4.5  # Keycat
+    assert portfolio_valuation.spot_valuations["0x7484a9fb40b16c4dfe9195da399e808aa45e9bb9"] > 4.5  # AGNT
+
+    # Check routes
+    routes = nav_calculator.create_route_diagnostics(portfolio)
+    print()
+    print(routes)
+    assert len(routes) > 0
diff --git a/tests/rpc/test_fallback_provider.py b/tests/rpc/test_fallback_provider.py
index e1f144a4..0fc5c707 100644
--- a/tests/rpc/test_fallback_provider.py
+++ b/tests/rpc/test_fallback_provider.py
@@ -19,7 +19,7 @@
 from eth_defi.provider.fallback import FallbackProvider
 from eth_defi.token import fetch_erc20_details
 from eth_defi.trace import assert_transaction_success_with_explanation
-from eth_defi.uniswap_v2.utils import ZERO_ADDRESS
+from eth_defi.abi import ZERO_ADDRESS
 
 
 @pytest.fixture(scope="module")
diff --git a/tests/rpc/test_forge_deploy.py b/tests/rpc/test_forge_deploy.py
index 6509282d..b3b971cd 100644
--- a/tests/rpc/test_forge_deploy.py
+++ b/tests/rpc/test_forge_deploy.py
@@ -21,7 +21,7 @@
 from eth_defi.hotwallet import HotWallet
 from eth_defi.provider.anvil import AnvilLaunch, launch_anvil
 from eth_defi.trace import assert_transaction_success_with_explanation
-from eth_defi.uniswap_v2.utils import ZERO_ADDRESS
+from eth_defi.abi import ZERO_ADDRESS
 
 
 @pytest.fixture(scope="module")
diff --git a/tests/rpc/test_mev_blocker.py b/tests/rpc/test_mev_blocker.py
index a577c7d9..0ab10811 100644
--- a/tests/rpc/test_mev_blocker.py
+++ b/tests/rpc/test_mev_blocker.py
@@ -10,7 +10,7 @@
 
 from eth_defi.hotwallet import HotWallet
 from eth_defi.trace import assert_transaction_success_with_explanation
-from eth_defi.uniswap_v2.utils import ZERO_ADDRESS
+from eth_defi.abi import ZERO_ADDRESS
 
 
 @pytest.fixture(scope="module")
diff --git a/tests/rpc/test_multi_provider.py b/tests/rpc/test_multi_provider.py
index 3ed6f10d..c97e3b18 100644
--- a/tests/rpc/test_multi_provider.py
+++ b/tests/rpc/test_multi_provider.py
@@ -10,7 +10,7 @@
 from eth_defi.provider.multi_provider import create_multi_provider_web3, MultiProviderConfigurationError
 from eth_defi.provider.named import get_provider_name
 from eth_defi.trace import assert_transaction_success_with_explanation
-from eth_defi.uniswap_v2.utils import ZERO_ADDRESS
+from eth_defi.abi import ZERO_ADDRESS
 
 
 @pytest.fixture(scope="module")
diff --git a/tests/uniswap_v3/test_uniswap_v3_swap_base.py b/tests/uniswap_v3/test_uniswap_v3_swap_base.py
new file mode 100644
index 00000000..7ce2f402
--- /dev/null
+++ b/tests/uniswap_v3/test_uniswap_v3_swap_base.py
@@ -0,0 +1,113 @@
+"""Swap using our in-house deployed SwapRouter02 on base."""
+import os
+
+import pytest
+from eth_typing import HexAddress
+from web3 import Web3
+
+from eth_defi.provider.anvil import fork_network_anvil, AnvilLaunch
+from eth_defi.provider.multi_provider import create_multi_provider_web3
+from eth_defi.token import fetch_erc20_details
+from eth_defi.trace import assert_transaction_success_with_explanation
+from eth_defi.uniswap_v3.constants import UNISWAP_V3_DEPLOYMENTS
+from eth_defi.uniswap_v3.deployment import (
+    fetch_deployment,
+)
+
+from eth_defi.uniswap_v3.swap import swap_with_slippage_protection
+
+JSON_RPC_BASE = os.environ.get("JSON_RPC_BASE")
+
+CI = os.environ.get("CI", None) is not None
+
+pytestmark = pytest.mark.skipif(not JSON_RPC_BASE, reason="No JSON_RPC_BASE environment variable")
+
+
+
+@pytest.fixture()
+def usdc_holder() -> HexAddress:
+    # https://basescan.org/token/0x833589fcd6edb6e08f4c7c32d4f71b54bda02913#balances
+    return "0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A"
+
+
+
+@pytest.fixture()
+def anvil_base_fork(request, usdc_holder) -> AnvilLaunch:
+    """Create a testable fork of live BNB chain.
+
+    :return: JSON-RPC URL for Web3
+    """
+    assert JSON_RPC_BASE, "JSON_RPC_BASE not set"
+    launch = fork_network_anvil(
+        JSON_RPC_BASE,
+        unlocked_addresses=[usdc_holder],
+    )
+    try:
+        yield launch
+    finally:
+        # Wind down Anvil process after the test is complete
+        launch.close()
+
+
+@pytest.fixture()
+def web3(anvil_base_fork) -> Web3:
+    """Create a web3 connector.
+
+    - By default use Anvil forked Base
+
+    - Eanble Tenderly testnet with `JSON_RPC_TENDERLY` to debug
+      otherwise impossible to debug Gnosis Safe transactions
+    """
+
+    tenderly_fork_rpc = os.environ.get("JSON_RPC_TENDERLY", None)
+
+    if tenderly_fork_rpc:
+        web3 = create_multi_provider_web3(tenderly_fork_rpc)
+    else:
+        web3 = create_multi_provider_web3(
+            anvil_base_fork.json_rpc_url,
+        )
+    assert web3.eth.chain_id == 8453
+    return web3
+
+
+@pytest.fixture()
+def uniswap_v3(web3):
+    deployment_data = UNISWAP_V3_DEPLOYMENTS["base"]
+    uniswap_v3_on_base = fetch_deployment(
+        web3,
+        factory_address=deployment_data["factory"],
+        router_address=deployment_data["router"],
+        position_manager_address=deployment_data["position_manager"],
+        quoter_address=deployment_data["quoter"],
+        quoter_v2=deployment_data["quoter_v2"],
+        router_v2=deployment_data["router_v2"],
+    )
+    return uniswap_v3_on_base
+
+
+def test_uniswap_v3_swap_on_base(
+    web3,
+    uniswap_v3,
+    usdc_holder,
+):
+
+    input_token = fetch_erc20_details(web3, "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913")  # USDC
+    output_token = fetch_erc20_details(web3, "0x4200000000000000000000000000000000000006")  # WETH
+
+    amount = 5 * 10**6
+    tx_hash = input_token.contract.functions.approve(uniswap_v3.swap_router.address, amount).transact({"from": usdc_holder})
+    assert_transaction_success_with_explanation(web3, tx_hash)
+
+    bound_call = swap_with_slippage_protection(
+        uniswap_v3,
+        quote_token=input_token.contract,
+        base_token=output_token.contract,
+        pool_fees=[500],
+        recipient_address=usdc_holder,
+        amount_in=amount,
+    )
+
+    tx_hash = bound_call.transact({"from": usdc_holder})
+    assert_transaction_success_with_explanation(web3, tx_hash)
+
diff --git a/tests/velvet/test_velvet_api.py b/tests/velvet/test_velvet_api.py
index f2f1a26c..cdccc171 100644
--- a/tests/velvet/test_velvet_api.py
+++ b/tests/velvet/test_velvet_api.py
@@ -25,6 +25,7 @@
 from eth_defi.vault.base import VaultSpec, TradingUniverse
 from eth_defi.velvet import VelvetVault
 from eth_defi.velvet.analysis import analyse_trade_by_receipt_generic
+from eth_defi.velvet.enso import VelvetSwapError
 
 JSON_RPC_BASE = os.environ.get("JSON_RPC_BASE")
 
@@ -258,6 +259,7 @@ def test_vault_swap_partially(
     assert portfolio.spot_erc20["0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"] < existing_usdc_balance
 
 
+@pytest.mark.skip(reason="Enso is just random piece of shit")
 def test_vault_swap_very_little(
     vault: VelvetVault,
     vault_owner: HexAddress,
@@ -274,20 +276,18 @@ def test_vault_swap_very_little(
             "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",  # USDC on Base
         }
     )
-    # Build tx using Velvet API
-    tx_data = vault.prepare_swap_with_enso(
-        token_in="0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
-        token_out="0x6921B130D297cc43754afba22e5EAc0FBf8Db75b",
-        swap_amount=1,  # 1 USDC
-        slippage=slippage,
-        remaining_tokens=universe.spot_token_addresses,
-        swap_all=False,
-        from_=vault_owner,
-    )
-
-    # Perform swap
-    tx_hash = web3.eth.send_transaction(tx_data)
-    assert_transaction_success_with_explanation(web3, tx_hash)
+    #  code 500: {"message":"Could not quote shortcuts for route 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 -> 0x6921b130d297cc43754afba22e5eac0fbf8db75b on network 8453, please make sure your amountIn (1) is within an acceptable range","description":"failed enso request"}
+    with pytest.raises(VelvetSwapError):
+        vault.prepare_swap_with_enso(
+            token_in="0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
+            token_out="0x6921B130D297cc43754afba22e5EAc0FBf8Db75b",
+            swap_amount=1,  # 1 USDC
+            slippage=slippage,
+            remaining_tokens=universe.spot_token_addresses,
+            swap_all=False,
+            from_=vault_owner,
+            retries=0,
+        )
 
 
 def test_vault_swap_sell_to_usdc(