diff --git a/registry/hasura/azure-cosmos/README.md b/registry/hasura/azure-cosmos/README.md
index 5f89006d..940e835c 100644
--- a/registry/hasura/azure-cosmos/README.md
+++ b/registry/hasura/azure-cosmos/README.md
@@ -29,7 +29,7 @@ Below, you'll find a matrix of all supported features for the Azure Cosmos DB fo
 | Paginate                        | ✅        |       |
 | Nested Objects                  | ✅        |       |
 | Nested Arrays                   | ✅        |       |
-| Nested Filtering                | ✅        |       |
+| Nested Filtering                | ❌        |       |
 | Nested Sorting                  | ❌        |       |
 | Nested Relationships            | ❌        |       |
 
diff --git a/registry/hasura/duckdb/README.md b/registry/hasura/duckdb/README.md
index 00e60f11..cf0bf243 100644
--- a/registry/hasura/duckdb/README.md
+++ b/registry/hasura/duckdb/README.md
@@ -22,18 +22,18 @@ Below, you'll find a matrix of all supported features for the DuckDB connector:
 
 | Feature                         | Supported | Notes |
 | ------------------------------- | --------- | ----- |
-| Native Queries + Logical Models | ❌        |       |
-| Simple Object Query             | ✅        |       |
-| Filter / Search                 | ✅        |       |
-| Simple Aggregation              | ❌        |       |
-| Sort                            | ✅        |       |
-| Paginate                        | ✅        |       |
-| Table Relationships             | ✅        |       |
-| Views                           | ❌        |       |
-| Distinct                        | ❌        |       |
-| Remote Relationships            | ✅        |       |
-| Custom Fields                   | ❌        |       |
-| Mutations                       | ❌        |       |
+| Native Queries + Logical Models | ❌     |       |
+| Simple Object Query             | ✅     |       |
+| Filter / Search                 | ✅     |       |
+| Simple Aggregation              | ❌     |       |
+| Sort                            | ✅     |       |
+| Paginate                        | ✅     |       |
+| Table Relationships             | ✅     |       |
+| Views                           | ❌     |       |
+| Distinct                        | ❌     |       |
+| Remote Relationships            | ✅     |       |
+| Custom Fields                   | ❌     |       |
+| Mutations                       | ❌     |       |
 
 ## Prerequisites
 
diff --git a/registry/hasura/graphql/README.md b/registry/hasura/graphql/README.md
index cae2f659..c2213499 100644
--- a/registry/hasura/graphql/README.md
+++ b/registry/hasura/graphql/README.md
@@ -10,6 +10,21 @@ For Hasura v2 users, this functionality is the replacement of
 The `ndc-graphql` data connector is open source and can be found in the
 [ndc-graphql GitHub repository](https://github.com/hasura/ndc-graphql).
 
+## Features
+
+Below, you'll find a matrix of all supported features for the GraphQL connector:
+
+| Feature                | Supported | Notes |
+| ---------------------- | --------- | ----- |
+| Queries                | ✅        | All features that v3 engine currently supports
+| Mutations              | ✅        |
+| Header Passthrough     | ✅        | Entire headers can be forwarded
+| Subscriptions          | ❌        |
+| Unions                 | ❌        | Can be brought in via scalar types
+| Interfaces             | ❌        |
+| Relay API              | ❌        |
+| Directives             | ❌        | @cached, Apollo directives
+
 ## Prerequisites
 
 1. Create a [Hasura Cloud account](https://console.hasura.io)
diff --git a/registry/hasura/mongodb/README.md b/registry/hasura/mongodb/README.md
index 35d3c713..34924d35 100644
--- a/registry/hasura/mongodb/README.md
+++ b/registry/hasura/mongodb/README.md
@@ -8,6 +8,28 @@ which can expose and run GraphQL queries via the Hasura v3 Project.
 The connector implements the [NDC Specification](https://hasura.github.io/ndc-spec/overview.html),
 but does not currently support mutations, column relationship arguments in queries, functions or procedures.
 
+## Features
+
+Below, you'll find a matrix of all supported features for the MongoDB data connector:
+
+| Feature                                         | Supported | Notes |
+| ----------------------------------------------- | --------- | ----- |
+| Native Queries + Logical Models                 | ✅        |       |
+| Simple Object Query                             | ✅        |       |
+| Filter / Search                                 | ✅        |       |
+| Filter by fields of Nested Objects              | ✅        |       |
+| Filter by values in Nested Arrays               | ✅        |       |
+| Simple Aggregation                              | ✅        |       |
+| Aggregate fields of Nested Objects              | ❌        |       |
+| Aggregate values of Nested Arrays               | ❌        |       |
+| Sort                                            | ✅        |       |
+| Sorty by fields of Nested Objects               | ❌        |       |
+| Paginate                                        | ✅        |       |
+| Collection Relationships                        | ✅        |       |
+| Remote Relationships                            | ✅        |       |
+| Relationships Keyed by Fields of Nested Objects | ❌        |       |
+| Mutations                                       | ✅        | Provided by custom [Native Mutations](TODO) - predefined basic mutations are also planned |
+
 ## Prerequisites
 
 1. Create a [Hasura Cloud account](https://console.hasura.io)
diff --git a/registry/hasura/postgres/README.md b/registry/hasura/postgres/README.md
index ceb7944d..41c202f0 100644
--- a/registry/hasura/postgres/README.md
+++ b/registry/hasura/postgres/README.md
@@ -14,6 +14,27 @@ for more information about specific features that are available for the PostgreS
 
 The connector is hosted by Hasura and can be used from the [Hasura v3 Console](https://console.hasura.io).
 
+## Features
+
+Below, you'll find a matrix of all supported features for the PostgreSQL connector:
+
+| Feature                | Supported |
+| ---------------------- | --------- |
+| Native Queries         | ✅        |
+| Native Mutations       | ✅        |
+| Simple Object Query    | ✅        |
+| Filter / Search        | ✅        |
+| Simple Aggregation     | ✅        |
+| Sort                   | ✅        |
+| Paginate               | ✅        |
+| Table Relationships    | ✅        |
+| Views                  | ✅        |
+| Mutations              | ✅        |
+| Distinct               | ✅        |
+| Enums                  | ✅        |
+| Default Values         | ✅        |
+| User-defined Functions | ❌        |
+
 ## Usage
 
 The Hasura PostgreSQL connector can be deployed using the [Hasura CLI](https://hasura.io/docs/3.0/cli/overview) by following either the [Quick Start Guide](https://hasura.io/docs/3.0/getting-started/overview/) or [deploying the connector](https://hasura.io/docs/3.0/connectors/deployment).