MCP has 9,400+ servers and zero per-tool versioning. When a server updates its tool schemas, your AI agents silently break with no warning.
MCP Sentinel snapshots tool schemas into a lockfile, detects changes, and classifies them as MAJOR, MINOR, or PATCH.
20 classification rules, SHA-256 hashed lockfile, GitHub Action for CI/CD, 4 output formats, schema quality auditing, and an interactive terminal dashboard.
