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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5233 servers

Ordered by checks passedClear filters
  • Responded14 / 22 checks passed

    Flashcard decks with pictures and card designs for a free vocabulary site in 60 languages.

    OtherOther

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

    Median latency 391 ms · Last checked

  • Outdated check14 / 22 checks passed

    UK property data: EPC, flood risk, planning, sale prices, MEES 2030 checks and grants.

    OtherOther

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

    Median latency 394 ms · Last checked

  • Responded14 / 22 checks passed

    The context marketplace: expert guided journeys your assistant runs step by step.

    OtherOther

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

    Median latency 404 ms · Last checked

  • Responded14 / 22 checks passed

    Coaching answers from Kevin Middleton's own writing, with the source link for each answer.

    OtherOther

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

    Median latency 433 ms · Last checked

  • Responded14 / 22 checks passed

    Blazor UI library DRYL: find components, read their exact API and tokens, validate Razor markup.

    OtherOther

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

    Median latency 436 ms · Last checked

  • Outdated check14 / 22 checks passed

    Sunrise, sunset, twilight, golden hour and moon times for any place on Earth. Free, no API key.

    OtherOther

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

    Median latency 441 ms · Last checked

  • Responded14 / 22 checks passed

    Google Trends data: interest over time, by region, related queries, and trending now.

    OtherOther

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

    Median latency 443 ms · Last checked

  • Responded14 / 22 checks passed

    Audit a site's structured data and llms.txt, match a trade to a template, and quote real prices.

    OtherOther

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

    Median latency 445 ms · Last checked

  • Outdated check14 / 22 checks passed

    Price any live event: parties, weddings, conferences, concerts. Instant estimates, no login.

    OtherOther

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

    Median latency 467 ms · Last checked

  • Responded14 / 22 checks passed

    Read-only bilingual Wash Bodega services, pricing, hours, pickup policy, and ordering handoff.

    OtherOther

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

    Median latency 475 ms · Last checked

  • Responded14 / 22 checks passed

    Designed, animated, editable presentations your AI writes on Renderball. No account needed to try.

    OtherOther

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

    Median latency 480 ms · Last checked

  • Responded14 / 22 checks passed

    Identify any Apple serial and read its device record, plus used-Mac prices, listings and checks.

    OtherOther

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

    Median latency 495 ms · Last checked

  • Responded14 / 22 checks passed

    Unofficial DC, Maryland and Virginia transit: trips, Metro, buses, rail, fares and alerts.

    OtherOther

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

    Median latency 508 ms · Last checked

  • Responded14 / 22 checks passed

    Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions.

    OtherOther

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

    Median latency 510 ms · Last checked

  • Responded14 / 22 checks passed

    Validates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digit

    OtherOther

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

    Median latency 511 ms · Last checked

  • Responded14 / 22 checks passed

    Chess opening guides and names, FEN and PGN checks, the daily chess puzzle and Elo estimates.

    OtherOther

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

    Median latency 511 ms · Last checked

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