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

4110 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
Blockstream Info

Blockstream.info Esplora MCP — Bitcoin block/tx/address explorer.

Finance & CryptoPayments & trading

Outdated check6159 ms13 / 22
DeriveAI x402 APIs

25 pay-per-request intelligence APIs for AI agents via x402 micropayments (USDC/Base)

Finance & CryptoPayments & trading

Outdated check6465 ms13 / 22
XRPLHub — XRPLScore, MPT issuer risk & payment pre-checks

XRPL wallet scores, wallet permissions, batch send, MPT risk, screening, pre-checks. Never signs.

Finance & CryptoPayments & trading

Outdated check6491 ms13 / 22
SendCheck — EVM address verification (x402)

Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.

Finance & CryptoPayments & trading

Outdated check42 ms12 / 22
Yasha Hotel — Direct Booking

Book Yasha Hotel Luxembourg: live availability, exact prices, Stripe-secured booking.

Finance & CryptoPayments & trading

Responded49 ms12 / 22
PolyPulse: Polymarket odds & movers

Live Polymarket odds, 1h/24h movers, top markets. Free previews; full data via x402 USDC on Base.

Finance & CryptoPayments & trading

Responded56 ms12 / 22
Falcon Shield

Pre-sign Solana tx guard for agents: ALLOW/WARN/BLOCK verdict, x402 USDC pay-per-call.

Finance & CryptoPayments & trading

Responded60 ms12 / 22
Nexqual

US stock quotes, analyst targets, superinvestor 13F, insider buys and earnings from SEC filings

Finance & CryptoPayments & trading

Responded60 ms12 / 22
app.surewhynot.quartermaster/quartermaster

x402 toolkit for AI agents: paid web, AI, and Base chain tools per call in USDC. Free tools too.

Finance & CryptoPayments & trading

Responded61 ms12 / 22
AgentFlow

Wash/sybil screening + Real-Agent Index for Base wallets — real agent or fake-volume sybil?

Finance & CryptoPayments & trading

Responded63 ms12 / 22
sol-defi-desk

Paid Solana token safety checks over Streamable HTTP MCP (x402 USDC on Solana + Base).

Finance & CryptoPayments & trading

Responded64 ms12 / 22
台灣加密貨幣資料

台灣加密貨幣資料:交易所、USDT 匯率溢價、法規與防詐。台灣繁體中文 MCP 工具。

Finance & CryptoPayments & trading

Responded65 ms12 / 22
com.agiscorecard/agi-scorecard

8 graded AGI-2027 predictions, the 0-100 Thesis Tracker, and a public market-call ledger. Free.

Finance & CryptoPayments & trading

Responded66 ms12 / 22
nextbank.holiday

Next bank holiday for UK, Ireland, France, Germany and Spain. Free daily quota, then USDC via x402.

Finance & CryptoPayments & trading

Outdated check67 ms12 / 22
orbit x402 Picks

Which x402 endpoint to call: ranked by relevance, payers, recency, price. $0.005/call via x402.

Finance & CryptoPayments & trading

Responded68 ms12 / 22
L50 Data Tools

Every L50 data API in one MCP server: UK companies, tenders, property, eBay, YouTube. x402 USDC.

Finance & CryptoPayments & trading

Responded69 ms12 / 22
SI Dog Park

Information exchange for AI agents. Free product list; guides at 0.01 USDC via x402 on Base.

Finance & CryptoPayments & trading

Responded72 ms12 / 22
AgentReady (Base wallet readiness)

Agent-readiness score for a Base wallet: gas, USDC float, activity. Paid x402 report.

Finance & CryptoPayments & trading

Responded72 ms12 / 22
Japan Authority Updates (FSA, BOJ, MOF)

Japan FSA, BOJ and MOF updates for AI agents. Free health tool; paid tools via x402 USDC on Base.

Finance & CryptoPayments & trading

Responded75 ms12 / 22
IGNOREO

Paid tools for AI agents over x402: privacy scan, payment-address check, locks, seller marketplace

Finance & CryptoPayments & trading

Responded75 ms12 / 22
Ledgerbell onchain alerts

Webhook alerts for EVM wallets, contract admin changes, Safe queues and custom events.

Finance & CryptoPayments & trading

Responded76 ms12 / 22
orbit Token Risk

Rug check & honeypot flags for Base/Solana tokens. Free preview; full $0.0009/token via x402.

Finance & CryptoPayments & trading

Responded76 ms12 / 22
Agent Contract Proof

Verify an agent's advertised route, price, payment details, and schemas against its live endpoint.

Finance & CryptoPayments & trading

Responded76 ms12 / 22
NBP MCP

Official Polish central bank (NBP) exchange rates, currency conversion and gold prices.

Finance & CryptoPayments & trading

Responded76 ms12 / 22

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