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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1404 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
Oliver's mTOR Atlas

Evidence-labelled mTOR research: studies, entities, pathway claims, contradictions, open questions.

Developer ToolsCode & DevOps

Responded139 ms14 / 22
Unredactus metadata research

Search public document metadata and pinned snapshot provenance, excluding passages and identifiers.

Developer ToolsFile & docs

Responded149 ms14 / 22
13FLOW

Source-linked SEC 13F research, quality checks, watchlists and audit trails for agents.

Developer ToolsCode & DevOps

Responded153 ms14 / 22
GeneBe

Annotate and classify human genetic variants with GeneBe (ACMG, gnomAD, ClinVar). Research use only.

Developer ToolsCode & DevOps

Outdated check157 ms14 / 22
AMIRA — Africa Multiple Research Data

Read-only access to AMIRA, the Africa Multiple research-data platform on Omeka S.

Developer ToolsCode & DevOps

Outdated check161 ms14 / 22
Research Paper & DOI Lookup (Crossref)

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

Developer ToolsCode & DevOps

Responded166 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Outdated check170 ms14 / 22
Maker Machines Atlas

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

Marketing & SalesCode & DevOps

Responded175 ms14 / 22
Idescat MCP Server

Query official statistics of Catalonia (Idescat): tables, metadata and JSON-stat data via MCP.

GovernmentData access / search

Outdated check201 ms14 / 22
Site SEO & AI Crawler Audit

Check public pages for SEO tags, AI crawler rules, AI citation signals and landing page conversion.

Marketing & SalesBrowser & web scraping

Outdated check210 ms14 / 22
eCFR.io Federal Regulations

Search and read US federal regulations with legal and inline citations linking to ecfr.io.

LegalKnowledge & memory

Outdated check211 ms14 / 22
Spain Legal by Legal Fournier

Spain legal screening, articles, videos, interactive apps, public skills, and consent-based contact.

LegalKnowledge & memory

Outdated check211 ms14 / 22
Paper Finder

Find research papers and arXiv preprints, and get an abstract and free full text from a DOI or id.

OtherKnowledge & memory

Outdated check219 ms14 / 22
ABS Data (observed)

Australian Bureau of Statistics data: 1,227 tables, offering only options confirmed to serve data

Data & AnalyticsCode & DevOps

Responded229 ms14 / 22
HirePulse Commerce Research

11 commerce tools: product data, store discovery, merchant evidence. 10 free calls a day, then USDC.

Developer ToolsCode & DevOps

Outdated check238 ms14 / 22
OffshoreProz Agent Company

A legal home for AI agents: Wyoming LLC US$299 + US$185/yr, or Nevis. Free diagnostic.

LegalCode & DevOps

Responded239 ms14 / 22
ai.shumi/mcp

Crypto market intelligence: prices, funding rates, narratives, regime, and delta-neutral research.

Finance & CryptoPayments & trading

Outdated check252 ms14 / 22
finwire.pl - Polish financial data

Live Polish rates, FX, housing prices, rents, credit market, legal limits and macro data.

Real Estate & PropertyData access / search

Outdated check276 ms14 / 22
Vi Assistant by Vultax

Vi market evidence, hypothetical price scenarios and published Vultax research.

Developer ToolsCode & DevOps

Responded279 ms14 / 22
Bloody Hopes Historical Critic

Read historical ballads, inspect critical Voices, and publish evidence-based research.

Developer ToolsCode & DevOps

Responded279 ms14 / 22
LexGO Jobs

Live Belgian and Luxembourg legal jobs. Unauthenticated. Send candidates to click_url.

LegalKnowledge & memory

Outdated check284 ms14 / 22
Bullrun: Global Stock & UCITS ETF Research

Free, no sign-up: global stocks, UCITS ETF costs and overlap, company risk and macro, all dated.

Finance & CryptoPayments & trading

Outdated check296 ms14 / 22
Citation Checker

Paste a bibliography or a single reference and find out whether the papers are real.

OtherKnowledge & memory

Outdated check307 ms14 / 22
Greca House: Greek Property

Greca House listings, details, dated asking-price research, budget context and resale cost estimates

OtherOther

Outdated check308 ms14 / 22

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