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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7732 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
de.hoibi/produktdaten

Offene deutsche Produkt- und Softwaredaten (CC BY 4.0): 80+ Datensätze mit Preisen und Quellen

OtherOther

Responded90 ms13 / 22
qrcode.io QR codes

Free static QR codes (PNG or SVG) that never expire, for URLs, WiFi, vCards and text. No account.

OtherOther

Responded90 ms13 / 22
Whirrwork

Robot jobs, sourced prices with history, providers by country, robot-vs-human costs, and RFQs.

OtherOther

Responded90 ms13 / 22
TariffsChart

US HTS duty lookup and import-duty review with official sources and explicit unresolved layers.

OtherData access / search

Responded90 ms13 / 22
ink.writeflow/writeflow

Get today's WriteFlow daily writing prompt and weekly £10 writing contest info (writeflow.ink).

OtherOther

Responded91 ms13 / 22
CSV File Tools

Inspect, filter, sort and edit CSV text with four free tools. No account or API key required.

OtherFile & docs

Responded91 ms13 / 22
KRTools Korean Utilities

Korean name/text romanization, Korean address to English, business number (BRN) check.

OtherOther

Responded91 ms13 / 22
Bydleno – prodej bytů

Search Czech flats for sale from 19 portals, merged into one offer per flat.

OtherData access / search

Responded91 ms13 / 22
Sapien Solutions

Sapien Solutions, Cleveland: what we build, our work, where we work, and inquiries.

OtherOther

Responded91 ms13 / 22
Eggtimer.app

Shareable timer links for countdowns, clock times, Pomodoro, Tabata and step recipes. No account.

OtherOther

Responded91 ms13 / 22
com.jojapi/marketplace

Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.

OtherData access / search

Responded92 ms13 / 22
exam.now

Cambridge, AQA and Edexcel past papers: questions, figures and mark schemes by part, and marking.

OtherOther

Responded92 ms13 / 22
WoodRoar (France)

French chainsaw comparison: search, filter and compare the models in WoodRoar's catalogue.

OtherData access / search

Responded92 ms13 / 22
WashyDish (US)

Search, filter and compare dishwashers on WashyDish, with DOE and ENERGY STAR data where certified.

OtherData access / search

Responded92 ms13 / 22
Siltwell

Your garden notebook: ask about your beds, plantings, harvests and frost dates, and log your work.

OtherOther

Responded93 ms13 / 22
ai.colaunched/public

Business ideas from real public demand, scored with dated evidence. No account needed.

OtherOther

Responded93 ms13 / 22
Mend

Repair broken JSON without changing values, find the exact error, outline or query big payloads.

OtherOther

Responded93 ms13 / 22
YardRider (France)

French lawn mower comparison: search, filter and compare the models in YardRider's catalogue.

OtherData access / search

Responded94 ms13 / 22
Trainradar24

Live Polish rail data: boards for every station, delays, PLK disruptions, train punctuality.

OtherOther

Responded94 ms13 / 22
YardRider (US)

Search, filter and compare lawn mowers in YardRider's catalogue, each with a link to its page.

OtherData access / search

Responded94 ms13 / 22
zzd: Swiss everyday data

Swiss grocery prices, wedding venues, rents by canton, EV cost per km and map posters, by zzd.

OtherOther

Responded94 ms13 / 22
FridgeBase (France)

French fridge comparison, with EU energy-label data (EPREL) where registered.

OtherOther

Responded95 ms13 / 22
Framekeep Public Discovery

Read-only discovery of Framekeep capabilities, security boundaries, and public resources.

OtherOther

Responded95 ms13 / 22
Goldsberry Orthodontics

Public facts and a free consultation request for Goldsberry Orthodontics, Sugarhouse, Salt Lake City

OtherOther

Responded95 ms13 / 22

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