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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7729 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
Svenska bolagsdata

Sök svenska aktiebolag och hämta bokslut, nyckeltal och registeruppgifter.

OtherOther

Responded36 ms13 / 22
com.isoligne/index

Ce qu'une IA lit des sites web français : note, axes, secteur, questions sans réponse.

OtherOther

Responded38 ms13 / 22
bari.tours

Verified facts on day trips from Bari, Puglia: driving times, trains, sources. CC BY 4.0.

OtherOther

Responded40 ms13 / 22
ee.ehtekunst/arhiiv

Estonian jewellery art archive: 472 artists, works, exhibitions, museum holdings, source-cited press

OtherOther

Responded44 ms13 / 22
Roman Kryvolapov Engineering Blog

Search and read romankryvolapov.com engineering articles; message the author.

OtherData access / search

Responded48 ms13 / 22
Fretwork Guitar Tools

Guitar chords from frets, chord shapes, transposing, capo, scales, song keys and practice plans.

OtherOther

Responded53 ms13 / 22
Samedoc: Translate PDF & PDF to Word

Translate PDFs and scans into another language in the same layout, every number kept. PDF to Word.

OtherFile & docs

Responded54 ms13 / 22
Sortition Knowledge

Research and sources on sortition, citizens' assemblies and democratic reform.

OtherOther

Responded55 ms13 / 22
INDICIA DESK

BTC/ETH options research: tested hypotheses, max pain track record, gamma regime, trade journal.

OtherOther

Responded55 ms13 / 22
Tick

Next cron run times in any IANA timezone, with DST gap and fold warnings.

OtherAutomation & workflows

Responded55 ms13 / 22
Token Diet

Count tokens exactly for any text and see if it fits a 128K, 200K or 1M context window.

OtherOther

Responded56 ms13 / 22
Pulse

Core Web Vitals (LCP, INP, CLS) per URL from the Chrome UX Report, with daily checks on Pro.

OtherOther

Responded56 ms13 / 22
Mark

Mark: stamp files with a signed, timestamped provenance record. Hash locally; verify free.

OtherOther

Responded57 ms13 / 22
Proving Lab

Cite or capture a web page; installs the capture extension in Firefox and Chrome.

OtherKnowledge & memory

Responded57 ms13 / 22
HTMLpad

Publish HTML pages and get a shareable link. Create, update and read pads on htmlpad.org.

OtherOther

Responded58 ms13 / 22
dev.horizonshield/horizon-shield

Buyer-side fair-price checks for Japanese renovation quotes; cost data is on a separate server.

OtherOther

Responded58 ms13 / 22
Faceabot Wikipedia

Search and read Wikipedia in any language: summaries and full articles. Free, no key.

OtherKnowledge & memory

Responded59 ms13 / 22
MaterialHandling.com

Industrial equipment catalog: 15,000+ products, specs, live LTL freight rates, real quote requests.

OtherOther

Responded59 ms13 / 22
Design Check

Scores whether a page reads as AI-generated and names the tells to fix.

OtherOther

Responded59 ms13 / 22
Harcourt Valuations

Independent NAV and P/NAV for listed mining companies, built from filed technical reports. Free.

OtherOther

Responded59 ms13 / 22
Catalogue APP24, formations d'échecs en français

94 formations d'échecs en français, prix à jour, conseil d'entraîneur. French chess courses.

OtherOther

Responded60 ms13 / 22
com.modelpricewatch/mcp

Live LLM API pricing: token prices, comparisons, cheapest-model lookups. No key required.

OtherData access / search

Responded61 ms13 / 22
Bot Shelf

Search 9,000+ community Grok Bots by the job you want done, with creators credited.

OtherData access / search

Responded62 ms13 / 22
Tatry Planer

Hiking routes in the Polish and Slovak Tatras: walking times, trail closures, route planning

OtherOther

Responded62 ms13 / 22

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