Know what changed in your MCP server's tools

A deployment can change the tools your agents see. Dominion compares a server's tools/list responses so your reviewer can see added or removed tools, edited descriptions, and input-schema changes.

For operators of compatible public MCP endpoints. Before subscribing, run the free drift check and confirm that it captures the exact endpoint and its tool list. Need help confirming fit or testing your alert destination? Email the endpoint to info@dominionobservatory.com.

Email alerts go to your billing email, with an optional webhook destination. Detected changes include old and new manifest hashes and a summary. Manifest contents and change history are public; do not submit private endpoints, access tokens, or confidential tool definitions.

US$29/month per server · monthly subscription.

What you get

• Scheduled checks — active monitors receive priority in scheduled probe batches. Detection time depends on successful captures and available capacity; there is no guaranteed detection interval.
• Alerts on detected changes — email and optional webhook payloads identify the server, old/new manifest hashes, and a human-readable change summary. Alert delivery is best effort.
• Public manifest history — recorded versions and recent change summaries at GET /api/drift?server=<url>. These records are not individually signed.

Free tier

The one-time drift check and /api/drift history queries are free. Compatible tracked endpoints can be captured on demand or during the fleet sweep. The subscription adds priority in scheduled checks and notifications when changes are detected.

Honest by design

Drift detection tells you the manifest changed and what changed — it does not judge whether the change is malicious; that review is yours. Not a security audit or a guarantee. Independent, third-party; not affiliated with the Model Context Protocol project or Microsoft.