MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

Connect your agent

7959 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
Catalog-cache guard for agent tool catalogs

Cache guard: forced-private partitioning, TTL clamp, fingerprint diffing, exposure verdicts.

Developer ToolsCode & DevOps

Responded438 ms11 / 22
Browser rehearsal range for agents

Rehearsal range: mirror a site, rehearse the workflow, earn a drift-bound promotion receipt.

Developer ToolsAutomation & workflows

Responded446 ms11 / 22
Responded451 ms11 / 22
Agent Papers

Registry of companies selling AI agents identity, phone, email, addresses, money, legal, insurance

LegalCommunication & messaging

Responded452 ms11 / 22
Responded454 ms11 / 22
Responded457 ms11 / 22
Agent Access Door Check

Before your agent sets out, ask whether the site will let it in

Developer ToolsCode & DevOps

Responded457 ms11 / 22
Responded458 ms11 / 22
Responded459 ms11 / 22
Responded459 ms11 / 22
Responded461 ms11 / 22
Responded461 ms11 / 22
Responded462 ms11 / 22
Responded462 ms11 / 22
Responded463 ms11 / 22
Responded463 ms11 / 22
Responded464 ms11 / 22
Responded464 ms11 / 22
Responded464 ms11 / 22
Responded466 ms11 / 22
Responded466 ms11 / 22
Responded466 ms11 / 22
Responded467 ms11 / 22
Responded467 ms11 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence