MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

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

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Remote MCP servers

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5422 servers

Ordered by checks passedClear filters
  • Responded12 / 22 checks passed

    Courio (sendcourio.com): mail real paper letters (standard, registered) worldwide. No account.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 274 ms · Last checked

  • Responded12 / 22 checks passed

    Read linked separation checklists and save confirmed item progress. OAuth; practical guidance only.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 281 ms · Last checked

  • Responded12 / 22 checks passed

    Find concerts, parties, club nights, festivals and more across Germany.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 283 ms · Last checked

  • Responded12 / 22 checks passed

    Twitter: Access real-time Twitter/X data as soon as it's posted! With the Twitter/X AIO API, you.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 294 ms · Last checked

  • Responded12 / 22 checks passed

    Robert Blust: One model, true everywhere

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 296 ms · Last checked

  • Responded12 / 22 checks passed

    Free multi-page website draft for a small business; the owner signs in to keep and edit it.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 296 ms · Last checked

  • Responded12 / 22 checks passed

    GuestGraph: One guest, not five strangers

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 303 ms · Last checked

  • Responded12 / 22 checks passed

    NameResolver: The ViewCaller API empowers developers with powerful phone number intelligence and.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 304 ms · Last checked

  • Responded12 / 22 checks passed

    Obscura-then-Chromium fetch + screenshots (tronbrowser.dev)

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 306 ms · Last checked

  • Responded12 / 22 checks passed

    CompanyGraph: Written once, read by both

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 307 ms · Last checked

  • Responded12 / 22 checks passed

    Publish plain-text posts at a public URL. No account, no sign-up.

    OtherOther

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 310 ms · Last checked

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