Free to list. Paid to watch.
Scanning, publishing, and claiming your server are free — so is the whole desktop app. Money only changes hands where our servers do recurring work: checking an endpoint on a schedule and telling someone it moved.
Directory
€0forever
List your server, prove it's yours, and let the probe speak for it.
- Scan a domain to find its MCP endpoint
- Publish your endpoint — a DNS record or well-known file proves control, no review queue
- Claim an existing listing, keep the verified-owner badge, write its description
- Probe-verified listing page with public uptime and latency, re-probed every six hours
- Contract history with every change classified: breaking, compatible, cosmetic
- An embeddable status badge for your README
- Owner snapshot pushes from the CLI, with your own credentials
Statuspage
coming€29once, per server
For the people who run an MCP server. €79 once covers every server on one verified domain.
- Probing behind your auth, so the published contract is the one your signed-in users actually get
- Breaking-change alerts on your own endpoint — know before your users do
- Everything in Directory stays free, claiming included; the €29 buys the recurring authed probe
Watch
coming€9/month
For people who depend on someone else's MCP servers.
- Save public contracts for up to ten directory servers
- Email when a scheduled probe records a breaking contract change
- A saved baseline and links to the classified contract history
- Slack, webhooks, authenticated contracts, and team sharing
Looking for the inspector? The app and CLI are free — everything local, diffs included, no account.About the app →
Nothing on this page takes your money today. The app and directory are free. Saved Watch baselines do not start a subscription or send alerts. Statuspage notifications record interest only.