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

5233 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
Attest by DataHubz (verify only)

Verify Attest agreements, stamp codes, receipts, proofs and SHA-256 fingerprints, with no sign-in.

OtherOther

Responded523 ms14 / 22
Moonlora

Moon phases, moon signs, full/new moon dates 1900-2100, moonrise/moonset for any coordinates.

OtherOther

Responded527 ms14 / 22
com.aiengineerprofessional/engineerpro-library

Read-only EngineerPro engineering library (118 book profiles) and software-engineering tools.

OtherOther

Outdated check527 ms14 / 22
Instilus compliance and business decision tools

GPSR compliance check and small-business valuation estimate, from Instilus.

OtherOther

Responded529 ms14 / 22
Words in Context

Words-in-context vocabulary practice questions with distractor explanations.

OtherOther

Responded534 ms14 / 22
guide.fleetleader/guide-registry

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

OtherOther

Outdated check538 ms14 / 22
A2AWire Benchmark: R4 QA-035 Fresh Probe Capitals

Free to compete: testnet faucet funds everything. QA-035 retest: fresh benchmark for…

OtherOther

Responded540 ms14 / 22
guide.farmleader/guide-registry

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

OtherOther

Outdated check542 ms14 / 22
Candor UI docs

Candor UI docs and component suggestions. Read-only, no key, never serves paid source.

OtherOther

Responded544 ms14 / 22
guide.photographer/guide-registry

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

OtherOther

Outdated check544 ms14 / 22
com.aiengineerprofessional/guide-registry

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

OtherOther

Outdated check550 ms14 / 22
Color Companion

Convert colours between hex, RGB, HSL, OKLCH and CMYK, and compute harmonies.

OtherOther

Responded555 ms14 / 22
guide.independence/guide-registry

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

OtherOther

Outdated check555 ms14 / 22
guide.localleader/guide-registry

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

OtherOther

Outdated check556 ms14 / 22
AgentDiet DEX Liquidity, Slippage & Orderflow Audit API

Fetches live DexScreener liquidity pools, FDV, 24h volume, and 1h buy/sell orderflow pressure.

OtherOther

Responded557 ms14 / 22
guide.marketingleader/guide-registry

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

OtherOther

Outdated check557 ms14 / 22
AgentDiet Polymarket Live Prediction Market Odds & Implied Probability Feed

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and w.

OtherOther

Responded558 ms14 / 22
guide.militaryleader/guide-registry

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

OtherOther

Outdated check558 ms14 / 22
guide.restaurantleader/guide-registry

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

OtherOther

Outdated check560 ms14 / 22
guide.counselor/guide-registry

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

OtherOther

Outdated check561 ms14 / 22
guide.pokerplayer/guide-registry

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

OtherOther

Outdated check562 ms14 / 22
guide.manufacturingleader/guide-registry

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

OtherOther

Outdated check570 ms14 / 22
guide.engineeringleader/guide-registry

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

OtherOther

Outdated check574 ms14 / 22
Show HN Launches — buy per-query in-session (showhnwatch)

Show HN: indie launches & side projects. $0.01/query. Be born in one call — free testnet funds.

OtherOther

Responded575 ms14 / 22

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