MCPR

Proxy layer for MCP apps providing tunnel, debug, deploy, and monitor capabilities through one endpoint.

MCPR is a proxy layer that merges MCP backends and widget frontends behind a single endpoint, handling CSP rewriting, domain management, and OAuth URLs automatically. The proxy provides instant HTTPS tunneling with stable URLs, a built-in widget debugger (mcpr Studio), and tools for local development, PR previews, and production deployment. Written in Rust, it simplifies MCP app development by eliminating environment-specific configuration and enabling offline widget debugging without connecting to AI clients.