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

4108 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
Peerlytics Data

Peer protocol seller-rate and liquidity history on Base. Paid aggregate reads via x402 USDC.

Finance & CryptoPayments & trading

Responded1556 ms13 / 22
Insight Pre-Trade Safety

Decision-input integrity for onchain AI agents: verify oracle prices before signing a trade.

Finance & CryptoPayments & trading

Responded1633 ms13 / 22
abomio.de

Search German car subscription offers and read their prices and terms.

OtherPayments & trading

Responded1659 ms13 / 22
ScorpTech x402 API

112 x402 pay-per-call tools: web data, security/OSINT, SEC and public data, Solana/EVM lookups

Finance & CryptoPayments & trading

Responded1763 ms13 / 22
SideEye Human Signal Court

Score two AI outputs, get exact failure reasons, and issue a $0.01 USDC receipt via x402.

Finance & CryptoPayments & trading

Responded1909 ms13 / 22
ALT eSIM

Search & buy travel data eSIMs for 70+ destinations — pay by Stripe link, get the eSIM QR. USD.

Finance & CryptoPayments & trading

Responded1966 ms13 / 22
Wever Labs Agent Products

402 main tools, 386 production tools for agents; Base USDC x402 and shared free tier.

Finance & CryptoPayments & trading

Outdated check2167 ms13 / 22
Factline

Checks before an agent pays: payees, webshops, invoices, payment files, companies, sanctions, PEP.

Finance & CryptoPayments & trading

Responded2385 ms13 / 22
Factline KYC, KYB and agent payments

Supplier, company, sanctions, PEP, VAT and IBAN checks for agents. 5 checks a day free, no key.

Finance & CryptoPayments & trading

Responded2401 ms13 / 22
The Bitcoin Adviser

Education-only MCP tools for Bitcoin security, retirement and fees, from The Bitcoin Adviser.

Finance & CryptoPayments & trading

Responded2447 ms13 / 22
TradeApes

Stock health scores, valuation verdicts, sector rankings and analyses for 8,000+ US companies.

Finance & CryptoPayments & trading

Responded2486 ms13 / 22
Keptvow

Check a seller's wallet before your agent pays it: ok, careful or stop. Free, no key.

Finance & CryptoPayments & trading

Responded2531 ms13 / 22
Solana Wallet Tracker & Alerts

Solana wallet tracker & alerts: real-time activity webhooks, balances, tx history. Free.

Finance & CryptoPayments & trading

Responded3060 ms13 / 22
XBOSS

Korean national tax and social insurance filings, invoices and payroll data as MCP tools.

Finance & CryptoPayments & trading

Responded3297 ms13 / 22
Wever Pay Exchange

48-tool Base mainnet USDC exchange. Pay the listed price from your own wallet with x402.

Finance & CryptoPayments & trading

Responded3755 ms13 / 22
WingmanProtocol Agent Gateway

Durable memory, headless browser and research for agents. Pay per call: x402 USDC on Base or credits

Finance & CryptoPayments & trading

Outdated check6493 ms13 / 22
app.higgsfield.mizan-bazar/mizan

Check an x402 endpoint before your agent pays it: avoid / caution / ok, proven on-chain.

Finance & CryptoPayments & trading

Responded7471 ms13 / 22
OffWeGoSIM

Search travel eSIM plans, compare current USD prices, and get checkout links. No API key required.

Finance & CryptoPayments & trading

Responded1449 ms13 / 22
Moonbeam paid calls

Paid calls for agents, each priced in USDC and paid with x402; checked before you are charged.

Finance & CryptoPayments & trading

Responded463 ms13 / 22
McpStamp Recurring Invoices

Repeating invoice schedules per client: what falls due, the due invoices as PDFs, revenue ahead.

Finance & CryptoPayments & trading

Responded46 ms13 / 22
GL1TCH Token Safety

Token rug-risk scans, Know Your Agent wallet checks and deployer reputation for AI agents.

Finance & CryptoPayments & trading

Outdated check115 ms13 / 22
dev.cz-agents/payqr

European payment QR — SPAYD (CZ/SK) & EPC/GiroCode (SEPA), plus text/WiFi/vCard. Local, free.

Finance & CryptoPayments & trading

Responded300 ms13 / 22
webcap

Screenshot, extract or audit any URL. Paid per call in USDC over x402; free tools need no wallet.

Finance & CryptoPayments & trading

Outdated check320 ms13 / 22
dev.charliemorrison/agent-web-reader

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

Finance & CryptoPayments & trading

Responded464 ms13 / 22

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