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
  • Outdated check14 / 22 checks passed

    Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

    OtherOther

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

    Median latency 581 ms · Last checked

  • Outdated check14 / 22 checks passed

    Physics calculators that show their work, plus the CODATA 2022 constants. Educational use.

    OtherOther

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

    Median latency 582 ms · Last checked

  • Outdated check14 / 22 checks passed

    Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

    OtherOther

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

    Median latency 583 ms · Last checked

  • Responded14 / 22 checks passed

    Uniswap/PancakeSwap/Aerodrome LP pools and price ranges ranked by net APR after impermanent loss

    OtherOther

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

    Median latency 585 ms · Last checked

  • Responded14 / 22 checks passed

    Step-by-step solver for linear/quadratic equations in one variable, signs and ± always right.

    OtherOther

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

    Median latency 587 ms · Last checked

  • Responded14 / 22 checks passed

    ISO 8601 week numbers: date to week, week to date, weeks-per-year.

    OtherOther

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

    Median latency 588 ms · Last checked

  • Outdated check14 / 22 checks passed

    Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

    OtherOther

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

    Median latency 593 ms · Last checked

  • Outdated check14 / 22 checks passed
    Perq

    perq.shVerified

    Verified free AI credits, free tiers and startup programs, each with source link and verified date.

    OtherOther

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

    Median latency 597 ms · Last checked

  • Outdated check14 / 22 checks passed

    Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

    OtherOther

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

    Median latency 598 ms · Last checked

  • Responded14 / 22 checks passed

    Convert times between IANA zones and detect skipped or ambiguous DST local times.

    OtherOther

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

    Median latency 599 ms · Last checked

  • Outdated check14 / 22 checks passed

    Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

    OtherOther

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

    Median latency 607 ms · Last checked

  • Outdated check14 / 22 checks passed

    Noise data tools: city noise rankings, decibel levels of common sounds, NIOSH safe-exposure math.

    OtherOther

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

    Median latency 613 ms · Last checked

  • Outdated check14 / 22 checks passed

    Read-only access to Rust profiling reports from CI: benchmark history, diffs and policies

    OtherOther

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

    Median latency 615 ms · Last checked

  • Responded14 / 22 checks passed

    Verify a company on GLEIF LEI and SEC EDGAR, screen sanctions. No key; quota-free data.

    OtherOther

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

    Median latency 616 ms · Last checked

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