Mcp Proxy Middleware With Transparent Tool Call Routing

via “middleware and interceptor pattern for cross-cutting concerns (logging, auth, rate-limiting)”

Framework for building Model Context Protocol (MCP) servers in Typescript

Unique: Provides middleware/interceptor abstraction for MCP servers, enabling clean separation of concerns and reusable policies, whereas raw MCP SDK requires embedding cross-cutting logic directly in handlers

vs others: More maintainable than handler-level logic because middleware can be composed and reused across tools, whereas alternatives require duplicating auth/logging/rate-limiting code in every handler