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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4131 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.ajwentcrazy/lazareus

S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.

Finance & CryptoPayments & trading

Responded120 ms12 / 22
NIAR

Which nearby physical shops in Spain have a product: stores, stock, prices, hours.

Finance & CryptoPayments & trading

Responded120 ms12 / 22
RCQ Data Oracle

Signed BTC and macro market intelligence for autonomous research, risk, and trading agents.

Finance & CryptoPayments & trading

Responded122 ms12 / 22
dev.workers.sebastiaan-ba3.signals/tools

Lighter funding/volume snapshot and multi-chain wallet balance checks for AI agents.

Finance & CryptoPayments & trading

Responded125 ms12 / 22
Vellium & Co Testing Lab

Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites

TravelPayments & trading

Responded126 ms12 / 22
Invoice Duplicate Recovery

Computes exact overpayments across caller-supplied approved invoices, payments, and recorded cred...

Finance & CryptoPayments & trading

Responded127 ms12 / 22
falcon.sol agents

Solana agent tools, x402 USDC pay-per-call (Cloudflare host).

Finance & CryptoPayments & trading

Responded130 ms12 / 22
Kobiyi MCP by usefulapi

Read receivables, payables and bank transactions; record collections and payments in Kobiyi.

Finance & CryptoPayments & trading

Responded131 ms12 / 22
dev.workers.sebastiaan-ba3.x402gen/tools

Free x402 payment-challenge generator with Express/Hono snippets; paid tier adds more frameworks.

Finance & CryptoPayments & trading

Responded134 ms12 / 22
HotShot Gear

Curated UK darts-gear catalogue ranked by fit, not payment: find, explain and compare darts kit.

Finance & CryptoPayments & trading

Responded134 ms12 / 22
Legacy

Give to UK registered charities: check charity numbers, price a gift and get a checkout link.

Finance & CryptoPayments & trading

Responded140 ms12 / 22
Living Stack Agent Commerce

Remote MCP for Living Stack offer discovery and buyer-authorized checkout preparation.

Finance & CryptoPayments & trading

Responded144 ms12 / 22
Fakturai — German E-Invoice (ZUGFeRD / Factur-X / E-Rechnung)

KoSIT-verified German e-invoices: generate & validate ZUGFeRD, Factur-X, XRechnung, EN 16931.

Finance & CryptoPayments & trading

Responded148 ms12 / 22
QSIG Intelligence

Geopolitical risk, theme board and point-in-time gold macro context for agents, paid via x402

Finance & CryptoPayments & trading

Responded149 ms12 / 22
polls.karbach.digital

Election data for agents: Germany, Spain, France, EU. Polls, forecasts, MPs, energy. Paid via x402.

Finance & CryptoPayments & trading

Responded152 ms12 / 22
H/M Content Credentials Evidence Verifier

Free C2PA 2.4 triage and reproducible official trust snapshot. No media, keys, or payment.

Finance & CryptoPayments & trading

Responded153 ms12 / 22
GDPR PII Shield & EU AI Act Anonymization Gate

Zero-retention GDPR PII redaction gate (IBAN, Tax-ID, HRB, Names) with signed Ed25519 VC.

Finance & CryptoPayments & trading

Responded154 ms12 / 22
Money Reactor

Crypto/stock prices, QR, DNS, RSS, URL reader, AI chat, weather, ENS, hashes. USDC Base $0.001+

Finance & CryptoPayments & trading

Responded154 ms12 / 22
Aval

Payment-backed trust scores for AI agents on Base (ERC-8004). $0.01 per check via x402.

Finance & CryptoPayments & trading

Responded155 ms12 / 22
net.postandshare/solana-token-launch

Create, launch and rug-check Solana SPL tokens over x402. Non-custodial, no keys handed over.

Finance & CryptoPayments & trading

Responded157 ms12 / 22
com.retirecrunch/calculators

FIRE & retirement calculators + a multi-currency portfolio rebalancer (exact buy/sell trades).

Finance & CryptoPayments & trading

Responded162 ms12 / 22
VignetteGO Road Trip Tolls

Read-only vignette and toll planning for nine countries; eight live checkout catalogues.

Finance & CryptoPayments & trading

Responded172 ms12 / 22
Kaio

Find and book local businesses in Italy on Kaio: real free times, booking, online payment link.

Finance & CryptoPayments & trading

Responded179 ms12 / 22
Fresh SEM Agent Backlink Checkout

Quote and track managed contextual backlink orders paid in USDC.

Finance & CryptoPayments & trading

Responded180 ms12 / 22

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