MCP Gateway

Converts OpenAPI 3.x specifications into MCP servers with multi-auth support, rate limiting, OpenTelemetry tracing, and destructive endpoint filtering.

A Go binary that reads OpenAPI 3.x specifications and exposes each API operation as an MCP tool, enabling AI agents to call any documented API as a native function without custom integration code. Supports bearer tokens, API keys, OAuth2, and basic authentication; includes per-tool token bucket rate limiting and OpenTelemetry tracing with secret redaction. Destructive endpoints are filtered by default, with an optional LLM-based pass to enrich thin API descriptions using Ollama, Anthropic, or OpenAI. Supports stdio and HTTP transports.