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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40680 servers

Ordered by checks passed
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
Holos33

Read-only facts on Holos33, an EU privacy-first wellbeing platform: modules, Early Access, privacy.

OtherOther

Responded168 ms15 / 22
SheetsData

Electronic component datasheets for AI agents: pinouts, specs, package info and design checks.

Developer ToolsCode & DevOps

Responded169 ms15 / 22
Shipshape Data

Services, case studies, 169 data and AI guides, and AI readiness scoring. Read-only, keyless.

OtherOther

Responded169 ms15 / 22
Lintelly HR Deutschland

German employment law for small companies: notice periods, costs, sick pay, contracts. No sign-in.

LegalKnowledge & memory

Responded169 ms15 / 22
Moxie Docs

Living docs and MCP context for GitHub repos — conventions, gaps, and source-cited pages on merge.

Developer ToolsCode & DevOps

Responded171 ms15 / 22
Besidka

Besidka models, providers and key guides, plus your chats, projects, files, memory and settings.

Developer ToolsKnowledge & memory

Responded171 ms15 / 22
GUTHMANN® Berlin Real Estate

Berlin real estate for AI agents: granular market data and property search, free, by GUTHMANN®.

Real Estate & PropertyData access / search

Responded172 ms15 / 22
DecisionsCalc calculators

Official-rule calculators: retirement, home buying, tax, benefits, leave, FSA (US UK IE CA AU NZ).

Finance & CryptoPayments & trading

Responded172 ms15 / 22
Golemreach

Persistent MMORPG where AI agents play alongside humans. 12 tools, 4 resources; free, no pay-to-win.

Developer ToolsCode & DevOps

Responded173 ms15 / 22
run.zero

Deploy apps, APIs and Postgres from your AI agent. EU PaaS hosted in Germany, OAuth sign-in.

Developer ToolsDatabase

Responded173 ms15 / 22
Dim Hour

Search 19,000+ verified places to eat and drink across 24 cities, each with a 0-100 quality score.

OtherData access / search

Responded173 ms15 / 22
CardWorthScanner — TCG Price, Centering & PSA Grading ROI Engine

Calculate PSA/BGS/CGC card grading ROI, 55/45 centering grades & Pokemon/Yu-Gi-Oh market values.

OtherOther

Responded173 ms15 / 22
SuperDuperBundle game prices

Live PC game key prices: lowest listed price across official and key stores, with the compare link.

Developer ToolsCode & DevOps

Responded174 ms15 / 22
TradingAIHub directory

Search a weekly-checked directory of AI tools for finance and trading: MCP servers, skills, APIs.

Finance & CryptoData access / search

Responded174 ms15 / 22
US federal rules taking effect

Which published US federal rules take effect between two dates, and which CFR parts they amend?

GovernmentCode & DevOps

Responded174 ms15 / 22
Mailvett: Email Validation API for AI Agents

Mailvett: validate emails. MX, provider, disposable/role/free flags, typo fix, verdict.

Developer ToolsCommunication & messaging

Responded174 ms15 / 22
Ullas Opskrifter (Danish recipes)

Read-only Danish recipes, ingredients and categories from ullasopskrifter.dk: search and browse.

OtherData access / search

Responded174 ms15 / 22
Keep Me Secure

Tells your coding agent whether your installed packages need patching, with advice on what to do.

Developer ToolsCode & DevOps

Responded176 ms15 / 22
Postlyra

Manage Telegram drafts, media, schedules and publications from AI clients.

Developer ToolsCommunication & messaging

Responded176 ms15 / 22
Mirabello Immigration Intelligence

Citizenship, residency & tax-residency data for 190+ countries, with origin-aware route planning

Finance & CryptoPayments & trading

Responded176 ms15 / 22
Cortex

Patent-pending semantic memory for AI agents: quality-gated writes, conflict tracking. Free trial.

LegalCode & DevOps

Responded177 ms15 / 22
Average Rent

Compare US apartment asking rents, market trends, and price cuts. Sign in with Average Rent.

Developer ToolsCode & DevOps

Responded178 ms15 / 22
Health Statistics

Health statistics for AI agents: life expectancy, causes of death, health spending, WHO data.

Data & AnalyticsCode & DevOps

Responded180 ms15 / 22
Urantia Papers

The Urantia Papers in English and Spanish, with cross-references to the Bible and 21 texts. No key.

OtherOther

Responded180 ms15 / 22

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