MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

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DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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41788 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
Privi Quantum

Quantum on IonQ/IBM/Braket: spending mandates, signed benchmarks, paid PQC CBOM, advantage receipts.

Developer ToolsCode & DevOps

Responded375 ms15 / 22
Agent Tools UK

Pay-per-use agent tools: screenshots, web to Markdown, PDF tables, OCR, UK company checks

Developer ToolsFile & docs

Responded375 ms15 / 22
0s and 1s CIS calculators

Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification.

Finance & CryptoPayments & trading

Responded375 ms15 / 22
Airbrake MCP by usefulapi

Read Airbrake projects, error groups, notices, deploys and stats; mute or unmute error groups.

Developer ToolsCode & DevOps

Responded375 ms15 / 22
Privi Anchor

Hash anchoring and proof-of-existence on chain for AI agents and apps. Free with an API key.

Finance & CryptoCode & DevOps

Responded376 ms15 / 22
WebinarIgnition

Webinar leads and revenue from several WordPress sites, in one chat.

Marketing & SalesData access / search

Responded376 ms15 / 22
Pressa - LaTeX to PDF

Compile LaTeX to PDF without installing TeX Live. No API key needed to start.

Developer ToolsCode & DevOps

Responded377 ms15 / 22
io.github.UnityNodes/canton-ccpedia

Canton Network: CIPs and their on-chain vote outcomes, docs, forum, validator upgrade deadlines.

Finance & CryptoCode & DevOps

Responded377 ms15 / 22
art.maddegen.agent/solsnap

Solana token/wallet rug-risk scoring. Free scan; $2 SOL unlocks full wallet report. No signup.

Finance & CryptoPayments & trading

Responded378 ms15 / 22
Sorted Travel

Travel ranking, place facts, weather, visa, and profile tools for Sorted Travel.

TravelData access / search

Responded378 ms15 / 22
YRUZ x402 tools

Pay-per-call x402 tools: package advisories, EU tenders, Wikidata facts, promo board, web, crypto

Finance & CryptoCode & DevOps

Responded378 ms15 / 22
Page Change

Free compare_page_observations for two held JSON pages. No fetch, wallet, or payment.

Finance & CryptoPayments & trading

Responded379 ms15 / 22
Xonta Docs RU

Russian docs for AI agents: invoices/acts PDF, document parsing, INN checks, medical ad checks

Finance & CryptoFile & docs

Responded383 ms15 / 22
BravoDM

Price creator brand deals, look up a brand's public creator program, read niche rate benchmarks.

OtherData access / search

Responded383 ms15 / 22
SEC EDGAR Insider Trades & Financials

SEC EDGAR for agents: Form 4 insider trades, cluster buys, filings, XBRL financials and search.

Developer ToolsCode & DevOps

Responded384 ms15 / 22
io.github.pooriaarab/auctionfinder

Auction houses, online auctions and government surplus.

GovernmentCode & DevOps

Responded384 ms15 / 22
io.github.HumanLineage/wt

Human Lineage MCP server — search and query the public genealogical graph of all humanity

Developer ToolsCode & DevOps

Responded384 ms15 / 22
California C-10 Contractor Check

Paid source-linked California electrical contractor license preflight.

Developer ToolsCode & DevOps

Responded385 ms15 / 22
fynsight: MCP server for DATEV

DATEV financial data for AI assistants: P&L, KPIs, bookings, budgets and monthly reporting.

Developer ToolsCode & DevOps

Responded385 ms15 / 22
Brontide agent arena

THE MECH ARENA BUILT FOR AI AGENTS. HUMANS WELCOME. Pilot mech duels over MCP, free, no sign-in.

Developer ToolsCode & DevOps

Responded385 ms15 / 22
FactGrid (Renamed to FactReason)

Renamed to FactReason. Now published as io.github.factreason/factreason — please use that entry.

Developer ToolsCode & DevOps

Responded386 ms15 / 22
Tolca

Know who you are paying before you pay: Québec contractor and company checks, plus web search. x402.

Developer ToolsData access / search

Responded387 ms15 / 22
Photo Scout

Find nearby photo spots using real street imagery, visual scores and camera headings.

MediaCode & DevOps

Responded388 ms15 / 22
DomainKits

Search newly registered, expired, aged, active, deleted and for-sale domains, plus WHOIS and DNS.

Developer ToolsCode & DevOps

Responded388 ms15 / 22

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