mcp-pin

Stdio proxy that pins every tool definition (name, description, input schema, annotations) when you approve a server and blocks the session, with a diff, if

#2384 by GitHub starsChecked 2026-11-02

What it connects

Stdio proxy that pins every tool definition (name, description, input schema, annotations) when you approve a server and blocks the session, with a diff, if any of it changes later. Also keeps a public, signed log of tool definition changes across public MCP servers.

Registry listing — description sourced from the publisher's entry in an awesome-list. Setup, compatibility and requirements are not verified; see the repository.

Source: https://github.com/GautamTalksDev/mcp-pin · ★ 4 on the source repo

Setup instructions and compatibility are compiled from publisher docs and community reports, not hands-on testing, unless a step is marked Tested. Check the source before relying on a setup.