windmill/backend/generate_mcp_endpoints_tools

MCP Tools Generator

The generate_mcp_tools.py script parses the OpenAPI specification and generates Rust code for MCP (Model Context Protocol) tools.

Setup

cd backend/generate_mcp_endpoints_tools
pip install -r requirements.txt

Usage

python3 generate_mcp_tools.py

The script will:

1. Parse backend/windmill-api/openapi.yaml
2. Find all endpoints marked with x-mcp-tool: true
3. Generate backend/windmill-api/src/mcp_tools.rs with a const array of tools

Adding MCP Tools

To mark an endpoint as an MCP tool, add x-mcp-tool: true to the operation in the OpenAPI spec. You can also add x-mcp-instructions to complete the description of the tool with instructions on how to correctly use the endpoint:

/w/{workspace}/scripts/list:
  get:
    x-mcp-tool: true
    x-mcp-instructions: you should call that with this or that arg
    summary: list scripts in workspace
    operationId: listScripts
    # ... rest of endpoint definition