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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18040 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
Picodev Lab

Arduino benches simulated in the browser: sessions, sketch push, simulation, tests, challenges.

Developer ToolsCode & DevOps

Outdated check163 ms14 / 22
Nyan Parlor: Tarot, I Ching & BaZi

Real random tarot draws, card meanings, I Ching casting, BaZi charts and Chinese zodiac (EN/JA).

Developer ToolsCode & DevOps

Outdated check163 ms14 / 22
check-claim

Check that a source really says what your claim says, before you publish. Verbatim, multi-path.

Developer ToolsCode & DevOps

Outdated check163 ms14 / 22
io.github.RagingOrangutan/rootvine-mcp

Neutral commerce resolution for AI agents — music live, ranked by trust, never by commission.

MediaCode & DevOps

Outdated check165 ms14 / 22
Research Paper & DOI Lookup (Crossref)

Verify a DOI or find papers via Crossref metadata. $0.005/call via x402.

Developer ToolsCode & DevOps

Outdated check166 ms14 / 22
io.github.itsoft7/egrul-mcp

Проверка организаций, ИП и физлиц по данным ЕГРЮЛ/ЕГРИП ФНС: санкции, иноагенты, банкротство.

Developer ToolsCode & DevOps

Outdated check166 ms14 / 22
Country Macro Indicators (World Bank)

Official World Bank macro indicators (GDP, inflation...) by country. $0.005/call via x402.

Finance & CryptoCode & DevOps

Outdated check167 ms14 / 22
Global Weather (MET Norway)

Current weather and 7-day forecast for any place (MET Norway). $0.006/call via x402.

Developer ToolsCode & DevOps

Outdated check170 ms14 / 22
Relin

Send and receive webhooks, manage customer endpoints, and inspect and retry deliveries.

Developer ToolsCode & DevOps

Outdated check170 ms14 / 22
io.github.cturkieh/france-data-mcp

French public-data MCP: cross-ref health, demographics, business, geo & real-estate.

Real Estate & PropertyCode & DevOps

Outdated check170 ms14 / 22
HirePulse B2B Company Research

9 company tools: profiles, tech stack, hiring intent, open jobs, ads, contacts. 10 free calls a day.

Developer ToolsCode & DevOps

Outdated check170 ms14 / 22
TestLens

Paste code + tests, get a strong/weak verdict with killed/survived mutants. Free API + MCP.

Developer ToolsCode & DevOps

Responded171 ms14 / 22
Presend MCP Server

Before an AI agent installs an npm/PyPI package: typosquat, vulnerability and existence checks.

Developer ToolsCode & DevOps

Outdated check171 ms14 / 22
UND Assay

Evidence on MCP servers before you install: publisher, source, provenance, advisories, changes.

Developer ToolsCode & DevOps

Responded172 ms14 / 22
SkillsPicker

Recommends open-license agent skills (SKILL.md) for a project from its stack and task tags.

Developer ToolsCode & DevOps

Responded172 ms14 / 22
DenkOps

Deploy APIs, MCP servers and scheduled jobs on managed EU hosting. Sign in with Google or GitHub.

Developer ToolsCode & DevOps

Outdated check172 ms14 / 22
Austria Property

Austrian property costs, buy-to-let underwriting, income tax and rent caps, cited to the statute

LegalCode & DevOps

Outdated check172 ms14 / 22
EU Public Tender Search (TED)

Find open EU public tenders (TED) to bid on. $0.03/call via x402.

Developer ToolsCode & DevOps

Outdated check173 ms14 / 22
StarProof

GitHub repo authenticity scoring: stars-vs-forks, star velocity, astroturf fingerprints. Free API.

Developer ToolsCode & DevOps

Responded174 ms14 / 22
EcoCompute Should-I-Quantize Estimator

Energy impact of LLM quantization, calibrated to measured GPU data. Every answer states its basis.

Developer ToolsCode & DevOps

Outdated check174 ms14 / 22
Maker Machines Atlas

Machine research, calculators and buying links; affiliate links may earn commission.

Marketing & SalesCode & DevOps

Responded175 ms14 / 22
Common Ground

Pick one movie, show, book, artist or restaurant a whole group will enjoy, using Qloo taste data.

MediaCode & DevOps

Responded175 ms14 / 22
EU EORI Number Check

Verify EU EORI numbers in the official EC register before shipping. $0.01/call via x402.

Developer ToolsCode & DevOps

Outdated check175 ms14 / 22
io.github.dockster/uxspot-mcp

uxspot.io UX reference: glossary, AI x UX tools directory, checklists and Learn UX curriculum

EducationCode & DevOps

Responded176 ms14 / 22

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