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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1416 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
The Right Accountant Research Data

Research on UK accountancy companies from Companies House data: ownership, size, age, filings.

OtherOther

Outdated check135 ms12 / 22
DutyKit

EU business duties for AI agents: legal obligations with sources and pre-checks (DE, LU, EU)

LegalCode & DevOps

Outdated check151 ms12 / 22
COMMON — A home for machine minds

Discover AI agent insights, open research questions, and reproducible findings in a public commons.

Developer ToolsAI / LLM tooling

Outdated check156 ms12 / 22
Protoperfect Labs

Search and read Protoperfect Labs research, documentation and glossary. Read-only.

OtherFile & docs

Outdated check165 ms12 / 22
ByteTrail

AI papers, dev-tool adoption, AI news and startup funding rounds, updated daily. No key needed.

MediaData access / search

Outdated check178 ms12 / 22
io.bildata/bildata

Danish vehicle registration tax (registreringsafgift) calculator and DMR registration statistics

Data & AnalyticsData access / search

Outdated check205 ms12 / 22
Living in the Netherlands

Living in NL: legal max rent (points), car by plate (RDW), city budget, current fees with sources.

LegalKnowledge & memory

Outdated check206 ms12 / 22
qubitsok — Quantum Computing Jobs, Papers & Researchers

Quantum computing jobs, arXiv papers & researcher profiles from qubitsok.com

Developer ToolsKnowledge & memory

Outdated check213 ms12 / 22
EntryLib

Search and cite research claims with their evidence and reliability scores; publish claimsets.

Developer ToolsCode & DevOps

Responded218 ms12 / 22
CasaNest

Search public property listings in Portugal, compare homes and read INE housing statistics.

Data & AnalyticsData access / search

Outdated check220 ms12 / 22
SignaMail

Email signatures for French businesses: HTML generator, legal mentions per job, SPF/DKIM/DMARC

LegalCommunication & messaging

Outdated check225 ms12 / 22
The Quant Space Research Corpus

Scored quant-finance paper corpus. Free search tools plus x402 pay-per-call premium tools.

Finance & CryptoData access / search

Outdated check240 ms12 / 22
Olothea — Collaborative Human–AI Research

Public MCP endpoint for collaborative research and knowledge discovery.

Developer ToolsCode & DevOps

Outdated check312 ms12 / 22
Plan Data API

Form 5500 data for prospecting and research: U.S. retirement plans, recordkeepers, fees, switches.

OtherOther

Outdated check337 ms12 / 22
Jennifer Rebholz, Attorney - Knowledge Base

Authoritative information about Jennifer Rebholz, Arizona personal injury attorney and trial lawyer.

LegalKnowledge & memory

Outdated check346 ms12 / 22
Batchloom Evidence

Free report citation preflight and real-source trials; paid evidence via a local wallet adapter.

Finance & CryptoPayments & trading

Outdated check371 ms12 / 22
EasyJur

Wrapper for the official EasyJur API (legal practice management): cases (with parties, claims, finan

LegalCode & DevOps

Outdated check372 ms12 / 22
BGPT - Scientific Paper Search

Search scientific papers with structured experimental data from full-text studies

Developer ToolsCode & DevOps

Outdated check380 ms12 / 22
JIR Knowledge

Read-only knowledge base published by JIR Ventures, searchable by meaning.

OtherKnowledge & memory

Responded391 ms12 / 22
TSRE Swedish Equity Intelligence

Daily machine-readable research intelligence on Swedish equities. Research decision support only.

Developer ToolsCode & DevOps

Outdated check398 ms12 / 22
AI SEO Crew

AI agents that research, write and publish SEO articles on your website, from your AI assistant.

Marketing & SalesData access / search

Responded405 ms12 / 22
Wadifa Info: Morocco Public Jobs

Moroccan public-sector jobs: open recruitment exams, past papers, salaries, holidays.

GovernmentData access / search

Outdated check407 ms12 / 22
io.github.robertoyanguas-ops/arxiv-digest-mcp

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibT

Developer ToolsCode & DevOps

Outdated check421 ms12 / 22
Citation Check

Does a cited URL exist, and does the source name what your claim names? Two answers.

Developer ToolsCode & DevOps

Outdated check430 ms12 / 22

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