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

4136 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
com.airblockfz/commodity-signal

Commodity futures bottom/top signals: 28 futures, verdict + score, scans. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded61 ms11 / 22
Omega x402 Security, Biomed & Escrow Intelligence MCP

7 x402 v2 pay-per-call MCP tools for FDA/ChEMBL, token rug scan, Base escrow & wallet forensics.

Finance & CryptoPayments & trading

Responded66 ms11 / 22
com.airblockfz/dubai-property-signal

Dubai property signals: 42 areas, AED/sqft index, verdict + rankings. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded66 ms11 / 22
com.airblockfz/inflation-signal

Inflation & Fed liquidity thermometer: 47 macro series, too_low..too_high. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded67 ms11 / 22
aeX402 — Cross-Chain DeFi MCP: LINQ, AMM, Bridge, AI

Agent MCP for DeFi: cross-chain LINQ fan-out, AMM quotes/swaps, bridge, AI. Solana+EVM. Free+x402.

Finance & CryptoPayments & trading

Responded67 ms11 / 22
x402 Doctor

Diagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.

Finance & CryptoPayments & trading

Responded70 ms11 / 22
com.airblockfz/fx-signal

FX bottom/top signals: 48 pairs (USD/KRW base), verdict + score, scans. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded77 ms11 / 22
com.airblockfz/stock-signal-us

US stock bottom/top signals: S&P500 + indexes, verdict + score, scans. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded78 ms11 / 22
Market Triggers

Stock watchlist alerts: 8-K filings, volume spikes, big moves, gaps, upcoming earnings. Read-only.

Finance & CryptoPayments & trading

Responded80 ms11 / 22
com.airblockfz/stock-signal-kr

Korea stock (KOSPI/KOSDAQ) bottom/top signals: verdict + score, scans. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded80 ms11 / 22
io.tooloracle/reserveoracle

ReserveOracle - 11 stablecoin reserve tools: attestations, composition, MiCA Art.36/37.

Finance & CryptoPayments & trading

Responded88 ms11 / 22
com.airblockfz/seoul-apt-signal

Seoul apartment signals: 25 districts from official transactions, scans. Pay-per-call x402.

Finance & CryptoPayments & trading

Responded95 ms11 / 22
HexScan Token Security

Honeypot detection & token risk scan for ERC-20s. Risk score 0-100, tax, source verification.

Finance & CryptoPayments & trading

Responded103 ms11 / 22
io.tooloracle/solanaoracle

SolanaOracle - 12 Solana tools: SPL tokens, Jupiter, validators, rent, programs, NFTs.

Finance & CryptoPayments & trading

Responded118 ms11 / 22
Money-Engine x402 Research

Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).

Finance & CryptoPayments & trading

Responded139 ms11 / 22
io.tooloracle/yieldoracle

DeFi Yield Intelligence MCP — 8 tools: 19K+ pools, risk-adjusted APY, RWA yields.

Finance & CryptoPayments & trading

Responded149 ms11 / 22
io.tooloracle/smartmoneyoracle

Whale & Institutional Flow MCP — 8 tools: TVL flows, alpha signals, stablecoin supply.

Finance & CryptoPayments & trading

Responded175 ms11 / 22
Treat Rocks

Buy a $2 novelty digital rock over x402 (USDC on Base). Serves payment instructions only.

Finance & CryptoPayments & trading

Responded324 ms11 / 22
Pre-dispatch rejection ledger

Witness for MCP calls rejected pre-dispatch: hash-chained ledger, enum differ, signed receipts.

Finance & CryptoPayments & trading

Responded327 ms11 / 22
Principal-drift ledger for standing instructions

Signed, versioned ledger of standing instructions with intake contradiction diffs.

Finance & CryptoPayments & trading

Responded328 ms11 / 22
Cold-Chain Custody Excursion Ledger

A handling-condition ledger that travels with a sensitive payload across every agent hop.

Finance & CryptoPayments & trading

Responded335 ms11 / 22
com.frontofgoal/odds-api

Live soccer prediction-market odds and order-book depth from Polymarket.

MediaPayments & trading

Responded338 ms11 / 22
Futility Breaker

Evidence-bound stopping for agents: judgment ledger, binding futility verdicts, signed receipts.

Finance & CryptoPayments & trading

Responded347 ms11 / 22
LION — Verified Company & Compliance Data

Keyless x402 compliance on Base: $0.001 OFAC wallet screen, $0.05 pack, $0.95 company file.

Finance & CryptoPayments & trading

Responded402 ms11 / 22

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