MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

7640 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
SitePatent

Search the SitePatent directory of websites and tools. Read-only, no API key.

OtherData access / search

Responded420 ms14 / 22
Renewably

Cheapest and greenest times to use electricity in Great Britain, and which tariff suits a home.

OtherOther

Responded421 ms14 / 22
Calmido Phone Number Lookup

Who is calling? Spam reports, a verdict and the business behind NL, BE and LU phone numbers.

OtherData access / search

Responded421 ms14 / 22
Paddock Cards

Send birthday cards, Christmas cards and postcards, printed and mailed for you.

OtherOther

Responded422 ms14 / 22
Dane Rolne: pasze, sery, sklepy i gospodarstwa w Polsce

Pasze dla drobiu, przepisy i kultury do sera, sklepy i gospodarstwa w Polsce, ze źródłem i datą.

OtherOther

Responded422 ms14 / 22
Kashif

Scores a website's online presence 0-100 and lists the top issues to fix. English/Arabic.

OtherOther

Responded423 ms14 / 22
GATA · Viajes

Stays in Spain and Spanish-speaking Latin America with booking links and map. Free, read-only.

OtherOther

Responded424 ms14 / 22
DaedalMap CIA World Factbook

CIA World Factbook country indicators: infrastructure, energy, demographics, economy, 2002-2026.

OtherOther

Outdated check424 ms14 / 22
SlangLane — Internet English, decoded.

Sourced internet slang and usage, including labeled non-graphic adult vocabulary.

OtherOther

Responded427 ms14 / 22
Africa Contacts

Customer-care and complaints numbers in Kenya and Nigeria, each read on the body's own website.

OtherOther

Responded428 ms14 / 22
Jobily Jobs

Search Greek job listings on Jobily.gr by role, location, sector or company. Anonymous, read-only.

OtherData access / search

Responded429 ms14 / 22
domhaul

Check if domain names are really available (live RDAP), with prices, brand scores and resale value.

OtherOther

Responded429 ms14 / 22
Data SL Consulting

Offres, prix publics et contenus de Data SL Consulting, conseil data et IA à Paris.

OtherOther

Responded429 ms14 / 22
Sitecomb

A quality score out of 100 for any website, plus the areas that need work.

OtherOther

Responded430 ms14 / 22
PromptFiling — UK company deadlines

Free Companies House deadline checks for UK companies: due dates, penalties, dormancy signals.

OtherOther

Responded432 ms14 / 22
Israel Small Business Valuation (esek-shave)

Free indicative valuation for small businesses in Israel: value, range and confidence.

OtherOther

Responded432 ms14 / 22
KeepUp

Net worth percentiles by country and age, and how KeepUp users compare. Read-only, no key.

OtherOther

Responded432 ms14 / 22
Konfiguratorius - PC builder, part prices and compatibility

Build a PC to a budget, check compatibility, estimate FPS. Prices refreshed at least twice a day.

OtherOther

Responded433 ms14 / 22
Kevin's Coaching Brain

Coaching answers from Kevin Middleton's own writing, with the source link for each answer.

OtherOther

Outdated check433 ms14 / 22
Ownware Catalogue

49 self-hosted business apps: prices, SaaS comparisons, guides, quickstarts. Read-only, no key.

OtherOther

Responded434 ms14 / 22
Tangent

Hand-picked design references, UI patterns and the people behind them, each with why it fits.

OtherOther

Responded434 ms14 / 22
Keyboardino

Keyboard tester, typing test, key codes, layouts, switches and a build planner.

OtherOther

Responded434 ms14 / 22
LabelTruth

EU supplement prices per 1000 mg of the element, compared within one chemical form.

OtherOther

Responded436 ms14 / 22
DRYL Components

Blazor UI library DRYL: find components, read their exact API and tokens, validate Razor markup.

OtherOther

Outdated check436 ms14 / 22

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