Kong/kong
Kong Gateway is a cloud-native, scalable API gateway that manages API, AI LLM, and Model Context Protocol (MCP) traffic with advanced security, observability, and extensibility features.
ckanthony/openapi-mcp
openapi-mcp is a Go program, distributed as a Docker image, that turns an existing OpenAPI or Swagger specification into a working Model Context Protocol toolset. It parses the document, generates an MCP tool schema for each operation from the declared parameters and request or response definitions, and serves those tools to MCP clients such as Cursor, forwarding each call to the real API. This means an agent can be given access to any documented HTTP API without writing integration code. Both OpenAPI v3 and Swagger v2 are supported, and the specification may be a local file mounted into the container or a remote URL. API key handling is a central feature: the key is supplied to the server through a command-line flag, an environment variable name, or a .env file placed next to a local spec, and is injected into outgoing requests at a configured location, which may be a header, a query parameter, a path segment or a cookie. The key never reaches the MCP client, so the assistant using the tools does not see the credential. The base URL is taken from the servers section of the specification and can be overridden. Operations can be filtered in or out by tag or by operation ID using include-tag, exclude-tag, include-op and exclude-op flags, which keeps the generated tool surface manageable for large APIs. Extra headers, for example for tracing or secondary authentication, can be injected through a REQUEST_HEADERS environment variable. The image is published on Docker Hub as ckanthony/openapi-mcp and can also be built locally; the repository includes a step-by-step Weatherbit API example.
https://github.com/ckanthony/openapi-mcp
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mcp-ecosystem/mcp-gateway
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