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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7723 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
Tuatara Summarize

Extractive document summarizer: returns the text's own sentences, so it cannot add facts.

OtherFile & docs

Responded1087 ms14 / 22
BJJ Square

BJJ and grappling gyms worldwide, plus upcoming competitions. Free, read-only.

OtherOther

Responded1088 ms14 / 22
Reciba

Receipts, quotes and service orders for Brazil: drafted in chat, issued on Reciba with a QR check.

OtherOther

Responded1089 ms14 / 22
Forty Forward Coaching

Forty Forward coaching for women 35+: Ask Elle perimenopause answers, program facts, how to apply.

OtherOther

Responded1099 ms14 / 22
Washlib

Find car washes in France, check live slots, get exact prices and start a booking.

OtherOther

Responded1105 ms14 / 22
Soma — open protocol for agent work

Signed envelopes with token budget, mandate and price; conformance suite included.

OtherOther

Responded1114 ms14 / 22
MANDA

Search Japan's M&A marketplace MANDA - public business-for-sale listings (read-only, no auth)

OtherData access / search

Responded1118 ms14 / 22
Joinville Boas Ofertas

Preços e ofertas vigentes de supermercados de Joinville/SC, revisados antes de publicar. Só leitura.

OtherOther

Responded1119 ms14 / 22
2ools

Build, version, review, and export websites, web apps, and games from a conversation.

OtherOther

Responded1122 ms14 / 22
MyPlate.food nutrition tools

USDA nutrition calculators + the preserved MyPlate Kitchen recipes; source-cited, machine-verified.

OtherOther

Responded1122 ms14 / 22
Pickly

Make group polls from a chat and check who's winning. Voters need no account.

OtherOther

Responded1130 ms14 / 22
OnPress — Korean internet newspaper builder

How to open and run a Korean internet newspaper with OnPress: plans, templates, guides. Read-only.

OtherOther

Responded1132 ms14 / 22
Selah: Brand Deal Rates

Free creator rate benchmarks and brand-offer checks, with sources. No login, no API key.

OtherOther

Responded1142 ms14 / 22
Poisar

Read-only public metadata server for Poisar discovery.

OtherOther

Responded1142 ms14 / 22
SpaceJobs.Now

Open space-industry jobs (launch, satellites, spacecraft) from 47 employers, with posted pay.

OtherOther

Responded1143 ms14 / 22
Frontier: evidence-scored science breakthroughs

New papers from Nature, Science, Cell, NEJM and other top journals, scored on evidence and novelty.

OtherOther

Responded1144 ms14 / 22
Truvon

Find and check local U.S. businesses: open or closed, sourced phone and hours, and how to act.

OtherOther

Responded1148 ms14 / 22
Sonar Connections

Source-attributed events, open data and availability

OtherOther

Responded1152 ms14 / 22
MatterCatalog

Is a smart home device Matter certified? CSA certificates, networks, platforms and US stores.

OtherOther

Responded1152 ms14 / 22
PV Solaire Énergie — Estimation solaire et devis (France)

Rooftop solar potential, RGE installer search and quote requests. France only, no API key.

OtherData access / search

Responded1158 ms14 / 22
com.kitsdeals/deals

Curated, human-reviewed deal feed for AI agents — live deal search + price watches. No auth.

OtherData access / search

Responded1161 ms14 / 22
Lie Detector Test

Find polygraph (lie detector) offices, pricing and service info across the US, Canada and the UK.

OtherOther

Responded1161 ms14 / 22
The Mirror System — AI Citability

Daniels AI Design Studio | Brand Discovery Intelligence™ find or request a Brand Record.

OtherOther

Responded1165 ms14 / 22
Animal Math

Free Pre-K to 5th grade math worksheets, worksheet makers, quizzes, teaching tools and curricula.

OtherOther

Responded1165 ms14 / 22

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