Connect OpenAPI to a coding Agent

Use developer MCP to let a coding Agent inspect a contract and verify a backend. API-to-MCP exposes API operations as callable tools; it is a different workflow.

1. Open your YAML/JSON with Open in the desktop app. Keep a saved independent copy before experimenting.
2. Open MCP & Coding for the current specification. Alternatively, from a checkout of the developer MCP repository, run npm ci and npm run build.
3. Configure a stdio MCP server in your Agent using executable node, with arguments /absolute/path/dev-mcp-server/dist/cli.mjs, --spec, /absolute/path/openapi.yaml. Use real absolute paths; do not paste the placeholders literally.
4. Ask the Agent to read an operation and its response schema before changing your backend. Ask it to call run_contract_tests with the backend’s explicit local baseUrl after the change.
5. Review the reported assertions and proposed code patch. Re-run after applying an accepted fix.

The developer MCP server needs Node.js 22.12.0+. Your Agent may send tool results or code context to its configured remote model. A model is optional for manual local requests and contract testing; your own provider bills your key, while hosted model credits are separate. No Cloud subscription is required for local work.

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