openapi-mcpDockerized MCP Server to allow your AI agent to access any API with existing api docs

OpenAPI-MCP is a Dockerized MCP server that allows AI agents to access any API with existing OpenAPI or Swagger documentation. It generates MCP tool definitions from a Swagger/OpenAPI specification file, enabling MCP-compatible clients like Cursor to interact with APIs described by standard OpenAPI specifications. This eliminates the need for additional coding to access an API; simply provide its OpenAPI/Swagger specification. The tool supports OpenAPI v2 (Swagger) and v3, creating MCP tool schemas from OpenAPI operation parameters and request/response definitions. It securely manages API key authentication for the proxied API without exposing keys to the MCP client. Key features include automatic tool generation from OpenAPI specifications, flexible API key handling, and the ability to work with local specification files or remote URLs. The tool is easily deployable and runnable as a containerized service with Docker. OpenAPI-MCP allows for secure API key management by injecting API keys into requests based on command-line configuration, loading keys from flags, environment variables, or .env files. It keeps API keys hidden from the end MCP client. The server URL detection feature uses server URLs from the spec as the base for tool interactions, which can be overridden. It also includes filtering options to include or exclude specific operations or tags and allows for custom header injection via the REQUEST_HEADERS environment variable.