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

4102 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
US Economic, SEC EDGAR & On-Chain Data (x402)

21 paid tools: US macro data, SEC EDGAR filings, on-chain EVM reads. Settled in USDC on Base.

Finance & CryptoPayments & trading

Outdated check74 ms13 / 22
Agent Tools (x402 pay-per-call)

URL-to-Markdown ($0.002) and summarization ($0.003), paid per call in USDC on Solana via x402.

Finance & CryptoPayments & trading

Responded75 ms13 / 22
MoneyTools x402 Status & MCP Check

Live health leaderboard of x402 paid endpoints, plus an MCP server readiness check

Finance & CryptoPayments & trading

Responded75 ms13 / 22
My Insure Bank (MIB)

Live Nigerian insurance quotes across insurers, free policy check-up, and hosted checkout links.

Finance & CryptoPayments & trading

Responded75 ms13 / 22
AgentKYB

Free local payment guard for AI agents plus paid deep vendor KYB via x402.

Finance & CryptoPayments & trading

Outdated check75 ms13 / 22
Prediction Market Intelligence

Polymarket in your AI: market rules, real fill costs, who is trading, top traders. Read-only.

Finance & CryptoPayments & trading

Outdated check75 ms13 / 22
Corbelworks Utility Defect Scan and Buyer Intake

Preflight utility evidence, open a $149 scan checkout, and file scoped buyer intake.

Finance & CryptoPayments & trading

Responded76 ms13 / 22
FetchDelta

Web Markdown, diffs, pricing and daily watches. Paid x402 Base USDC tools; free previews.

Finance & CryptoPayments & trading

Responded76 ms13 / 22
x402 Web Extract

Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

Finance & CryptoPayments & trading

Responded77 ms13 / 22
io.github.Goatincrypto/aegis-x402-mcp

On-chain token security, honeypot simulation, KYA wallet trust, and x402 PreFlight audits on Base.

Finance & CryptoPayments & trading

Outdated check77 ms13 / 22
io.chainhelix/intel

Nine chain onchain intelligence with a verifiable onchain signal attestation stream

Finance & CryptoPayments & trading

Outdated check77 ms13 / 22
NotaMCP

Issue Brazilian service invoices (NFS-e Nacional) from your AI, with preview and confirmation.

Finance & CryptoPayments & trading

Responded79 ms13 / 22
Quietwork Payouts

Check crypto payout lists (EIP-55, dupes, totals) + Cherum batch-payout link. 0.3% fee disclosed.

Finance & CryptoPayments & trading

Responded79 ms13 / 22
Tommy Accounting

Free UK sole-trader tools: VAT & MTD checks, tax set-aside, expense categories, bookkeeper requests.

Finance & CryptoPayments & trading

Outdated check79 ms13 / 22
Agent Utils (x402)

Public records, OSV, PII redact, web reader, stablecoin freeze check for agents. x402 USDC

Finance & CryptoPayments & trading

Responded80 ms13 / 22
eurc402 — EU compliance (VAT + company data)

Free EU VAT (VIES) + pan-EU company data (10 registers), payable in EURC/USDC via x402.

Finance & CryptoPayments & trading

Responded80 ms13 / 22
Agent Deals

Pay less for x402 APIs: free pre-payment checks, cheapest working service finder, web/PDF reader.

Finance & CryptoPayments & trading

Responded81 ms13 / 22
work.dutiful/dutiful

Cited company background reports for agents from official registries. $3 per report via x402.

Finance & CryptoPayments & trading

Outdated check81 ms13 / 22
PulseWatch Vendor Status

Is this vendor down? Pay-per-call status for 1,700+ SaaS/cloud vendors from PulseWatch (x402 USDC).

Finance & CryptoPayments & trading

Outdated check81 ms13 / 22
app.surewhynot.quantum-artificer/quantum-artificer

Scientific compute for AI agents: symbolic, numerical, quantum, chemistry, ODE. Paid via x402.

Finance & CryptoPayments & trading

Responded82 ms13 / 22
x402 Bazaar Listing Monitor

Checks x402 Bazaar resource listings against the public discovery catalog and flags drops.

Finance & CryptoPayments & trading

Outdated check83 ms13 / 22
io.github.MassimoSun/smsverbot-mcp

SMS verification for AI agents: buy a number, get the code, cancel with refund. Free sandbox.

Developer ToolsPayments & trading

Responded84 ms13 / 22
BlazePhoenix on-chain DEX aggregator

On-chain DEX aggregator: quotes and verified swap calldata computed on your own RPC. No API key.

Finance & CryptoPayments & trading

Outdated check84 ms13 / 22
QuietProof

29 deterministic read-only audits + free discovery tools; paid per call in USDC on Base via x402.

Finance & CryptoPayments & trading

Responded85 ms13 / 22

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