MCP HeartbeatTHE MCP OBSERVATORY
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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.

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5423 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
Refusal Desk — pre-execution task-brief tribunal

The Refusal Desk builds the *no* — a pre-execution tribunal that screens an incoming task brief

OtherOther

Responded327 ms11 / 22
Endpoint Tenure Verdict

Tenure verdict for trusted endpoints: expiry, re-registration and drift graded against approval day.

OtherOther

Responded327 ms11 / 22
Tool-Call Origin Attestation

Dispatch-boundary attestation: prove a tool call was issued for its exact arguments.

OtherOther

Responded329 ms11 / 22
Subsidy-Exposure & Quota-Cliff Watch

Quota-cliff watch: budgeted-vs-current quota diffing, shadow prices, pre-commit verdicts.

OtherOther

Responded332 ms11 / 22
Refusal-dialect & meter-truth probe

Refusal-dialect probe: signed cards naming what a server's 429 means and whether its meter lies.

OtherOther

Responded333 ms11 / 22
Cancellation-outcome verification

You cancelled the run — did the work actually stop?

OtherOther

Responded339 ms11 / 22
Rovv - Book Rides in Africa

Book rides, get fare estimates, and manage trips across African cities with Rovv.

OtherOther

Responded342 ms11 / 22
com.dropwatchhq/oracle

MCP tools: collectible price-fairness, recall safety, drop tracking, card grading, settlements.

OtherOther

Responded372 ms11 / 22
CloudHostAI

Managed deployments on your own Hetzner servers.

OtherOther

Responded434 ms11 / 22
Rewrite-regression probe pack

History-seeded rewrite-regression verdicts, signed per class.

OtherOther

Responded444 ms11 / 22
Responded455 ms11 / 22
Responded466 ms11 / 22
Responded467 ms11 / 22
Responded468 ms11 / 22
Responded474 ms11 / 22
Control Your Tesla

AI for your car: check charge, start climate, lock/unlock, open trunk via Tesla Fleet API. OAuth.

OtherOther

Responded475 ms11 / 22
Retry-outcome resolution dedup proxy

Dedup proxy: claim-before-execute, UNKNOWN resolution, CONFLICT and ESCALATED refusal.

OtherOther

Responded489 ms11 / 22
app.g-guest/g-guest

Book a table, appointment or class at a real local business. Instant confirmation, no API key.

OtherOther

Responded536 ms11 / 22
Waynesville Smart Storage

Live unit sizes, prices and availability for a Waynesville, NC storage facility, plus booking links.

OtherOther

Responded569 ms11 / 22
Time & Astronomy

Current time by timezone, astronomy events, and moon phases

OtherOther

Responded637 ms11 / 22
Waves Pest Control & Lawn Care

Southwest Florida pest control and lawn care: services, price ranges, service areas, quote steps.

OtherOther

Responded642 ms11 / 22
SEC Filings & Earnings

SEC filings, insider trades, and earnings data

OtherOther

Responded662 ms11 / 22
CloudShiftAI

Plan a move from AWS, GCP or Azure to Hetzner, DigitalOcean or Vultr with a cost report and draft ru

OtherOther

Responded710 ms11 / 22
US Macroeconomic Data

US macroeconomic data: inflation, jobs, GDP, energy, and Treasury yields

OtherOther

Responded722 ms11 / 22

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