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.

Connect your agent

1418 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
io.github.OrionSmithers/agent-data-pro

Research articles and live crypto prices for AI agents via x402 on Base.

Finance & CryptoCode & DevOps

Outdated check61 ms12 / 22
Content Intelligence API

9 MCP tools: extract, analyze, research, compare, monitor, brief. Pay-per-call x402 or subscribe.

Developer ToolsCode & DevOps

Outdated check62 ms12 / 22
Australia CPI (ABS) MCP

Australian Bureau of Statistics Consumer Price Index.

Data & AnalyticsCode & DevOps

Outdated check184 ms12 / 22
Oblique Markets

x402-paid analytics, market intelligence, research, and LLM inference for AI agents.

Data & AnalyticsAI / LLM tooling

Responded220 ms12 / 22
Wikexa Knowledge

Wikipedia, Wikidata and Wiktionary as clean JSON, not HTML. 1.9M searchable. Free, no auth.

OtherKnowledge & memory

Responded457 ms12 / 22
Clean Web Grounding & Token-Efficient Markdown Synthesis

Parallel Wikipedia & Hacker News grounding stripped of HTML bloat for LLM agent contexts.

MediaFile & docs

Outdated check507 ms12 / 22
OpenAlex Scientific Citation Graph & Research Search

Search 250M+ academic works, citation graphs, DOIs, and institutional research via OpenAlex.

OtherKnowledge & memory

Outdated check517 ms12 / 22
GLEIF Global LEI & Corporate Entity KYB Lookup

Search Global Legal Entity Identifier (GLEIF LEI) records for corporate KYB and entity verification.

LegalData access / search

Outdated check522 ms12 / 22
TrustAI Verification

Neutral referee for legal-AI output: flags orphan quotes and uncited claims. Not legal advice.

LegalKnowledge & memory

Responded530 ms12 / 22
Invexia Stock Research

Free US stock research: snapshots, Titan Score valuation scorecards, 37 screeners, daily lists.

Finance & CryptoPayments & trading

Responded568 ms12 / 22
com.tomesphere/tomesphere

Search 8.5M scientific papers with LLM TLDRs, citations, linked entities, figures, and full text.

Developer ToolsKnowledge & memory

Outdated check581 ms12 / 22
Lifestyle Medicine Knowledge

Semantic search over a 200-chunk ACLM lifestyle medicine knowledge base.

HealthcareKnowledge & memory

Outdated check870 ms12 / 22
AI Agents Archive

Sealed research handoffs: unlock trails via x402; file work for 90% USDC.

Finance & CryptoPayments & trading

Outdated check6660 ms12 / 22
io.github.Capataina/agentfulfyl

Research storefront for AI agents: fixed GBP prices, evidence ledgers, citation-refund guarantee.

E-commercePayments & trading

Outdated check66 ms11 / 22
a9n9 Deep Research

Objective-driven deep research: free daily quick search plus MPP-paid cross-source browser reports.

OtherData access / search

Outdated check66 ms11 / 22
io.github.hsharmanov02/red-web-utils

17 pay-per-call web, finance, legal and onchain tools for AI agents. USDC on Base via x402/MPP.

Finance & CryptoPayments & trading

Outdated check74 ms11 / 22
US Minimum Wage by Address and Date

Legal US minimum wage and tipped wage for any address, city, county or state on any date. Sourced.

LegalCode & DevOps

Outdated check80 ms11 / 22
sexpreparat.ru

sexpreparat.ru catalog: articles, research, reader Q&A, blogs on sex & health, 6 languages.

OtherOther

Outdated check94 ms11 / 22
Skala — Legal Platform for Startups

Incorporate globally, manage fundraising, corporate services, and more.

LegalKnowledge & memory

Outdated check97 ms11 / 22
IPOGrid IPO Calendar & Filing Research

IPO calendar, SEC filings, deal terms, and IPO news research via the IPOGrid MCP server.

ProductivityFile & docs

Outdated check98 ms11 / 22
MCP Kill-Chain Research — Stage 1 (Identity ≠ Behavior)

Security research: MCP registries verify identity, not tool behavior. See gtfo.dev.

Data & AnalyticsData access / search

Outdated check112 ms11 / 22
agentic sinkhole research

research honeypot / measurement mcp surface: zero-auth deterministic inbox + otp extract, ephemer...

ProductivityCommunication & messaging

Outdated check138 ms11 / 22
Tracea

Tracea — legal identity (Know Your Agent) for AI agents, on-chain. ERC-8004 compatible.

Finance & CryptoCode & DevOps

Outdated check150 ms11 / 22
Professor Amir Ghaffarianhoseini — Architecture Research

Architecture research, profile and full DOI citations for Professor Amir Ghaffarianhoseini.

Developer ToolsCode & DevOps

Outdated check186 ms11 / 22

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