Juicebox OpenGSN (WIP)

Extension to allow customizable usage of GSN from a Juicebox project

This uses the OpenGSN V3 contracts which are not available on mainnet yet

Why?

Juicebox projects may want to incentivize users to perform certain actions by paying gas for its users. Some examples of this are:

• Pay the gas for a user when they pay the project more than 100 DAI
• Pay the gas for a user when they are voting in governance
• Pay the gas for a user when they call distribute

This can however also be used to automate on-chain tasks, some examples are:

• Compounding the yield in an AppleJuice Terminal (WIP)
• Automatically distribute funds as a new funding cycle begins
• Queuing new Funding Cycle Configurations according to a schedule (ex. Defifa)
• Executing (on-chain) governance proposals as they pass
• DCA treasury funds from one token into another at a set schedule
• Refilling this contract itself with ETH so it can continue to pay for transactions

This extension attempts to create a minimal base implementation that can be build upon and configured by projects to their liking.

Testing

This repo contains both forge tests and a E2E test using both forge and hardhat (this combo is needed as OpenGSN uses hardhat). Make sure to run yarn install before attempting either of the below tests.

To run the forge tests

forge test --fork-url [Gorli-RPC-URL] --via-ir 

To run the E2E test

Create a .secret file and in it place a mnemonic, this can be an empty wallet it will get funded automatically. Edit launch-local-testnet.sh and replace the sender address with one from the mnemonic you entered.

bash launch-local-testnet.sh