Fix guides · check stability.breaking

Removing or changing MCP tools breaks agents that depend on them

Tools removed or whose schemas changed in the last 30 days break saved workflows and agent memory.

4,968 of 15,720 reachable MCP servers (31.6%) have this issue today.

Why it matters

Agents store tool names and argument shapes. Removing a tool or renaming a parameter fails silently until a user notices. Prefer adding a new tool and deprecating the old one in its description for a release.

Check your server

Paste your endpoint at /check, or run it in CI:

pipx run glimind check https://your-server.example.com/mcp --min-grade B