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As Squirrels maintainers, we are dedicated in maintaining backward compatibility across all patch versions in the same minor version. We are also committed to avoid breaking changes across minor versions as much as possible. However, if absolutely necessary, we will provide a smooth upgrade path for users. The following are fixes and new features for v0.5.3.

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Fixes

  • The x-api-key header was not being respected for MCP requests. This has been fixed.

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New features

MCP resource for data catalog
  • A new MCP resource was added for the data catalog, which returns the same thing as the get_data_catalog tool
  • Supporting MCP clients can use this resource to automatically add the data catalog to the system prompt when starting a new conversation, without needing the AI agent to call the get_data_catalog tool
  • The resource has the following properties:
    • uri: sqrl://data-catalog
    • name: data_catalog_from_[project_name]
    • title: Data Catalog (Project: [project_label])
    • description: Details of all datasets and parameters you can access in the Squirrels project '[project_name]'
API headers documentation
  • The API documentation was updated to include the x-api-key, x-verify-params, and x-orientation headers. The query and request body parameters for x_verify_params and x_orientation are deprecated.
  • The configurable headers were intentionally left out of the documentation given that they are meant for internal use only.
New welcome banner in terminal for API server
  • The welcome banner in the terminal after running sqrl run now looks something like this:
══════════════════════════════════════════════════
                            👋  WELCOME TO SQUIRRELS!
══════════════════════════════════════════════════

 🖥️ Application UI
  └─ Squirrels Studio: http://127.0.0.1:4465/project/sample-expenses/v1/studio
     └─ (this redirects to studio: http://127.0.0.1:4465)

 🔌 MCP Server URLs
  ├─ Option 1:         http://127.0.0.1:4465/project/sample-expenses/v1/mcp
  └─ Option 2:         http://127.0.0.1:4465/mcp

 📖 API Documentation
  ├─ Swagger UI:       http://127.0.0.1:4465/project/sample-expenses/v1/docs
  ├─ ReDoc UI:         http://127.0.0.1:4465/project/sample-expenses/v1/redoc
  └─ OpenAPI Spec:     http://127.0.0.1:4465/project/sample-expenses/v1/openapi.json

──────────────────────────────────────────────────
                   ✨ Server is running! Press CTRL+C to stop.
──────────────────────────────────────────────────

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More info

For more details, see the GitHub release notes for v0.5.3.