Point this at any OpenAPI 3.x spec and Claude gets instant access to every endpoint through natural language. No manual tool definitions, no custom server code per API. It works with Stripe, GitHub, Jira, or your internal services. Just pass a spec URL and optional auth credentials. The server exposes two tools: list_endpoints to discover operations, and call_endpoint to execute them with automatic parameter handling. Built in auth support for Bearer tokens, API keys, and Basic auth. You can filter to specific endpoints, override base URLs for staging environments, and inject custom headers. One line of config turns any OpenAPI compliant API into callable MCP tools.
claude mcp add --transport stdio io.github.saurav61091-mcp-openapi-runner -- npx -y mcp-openapi-runner