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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4734 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
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
Base Approval Risk Check

Find risky ERC-20 approvals on a Base wallet and get revoke calldata. Paid x402 report.

Finance & CryptoPayments & trading

Responded77 ms12 / 22
com.x402supply/page-extract

URL to clean article markdown/text + metadata and links. Deterministic. $0.001/call via x402.

Finance & CryptoFile & docs

Responded79 ms12 / 22
com.x402supply/chess-eval

Stockfish chess eval: best move, score, principal variation, multipv. $0.005/call via x402.

Finance & CryptoPayments & trading

Responded79 ms12 / 22
orbit Crypto News

Deduplicated crypto headlines from 37 RSS sources. Free preview; $0.0008/call via x402.

Finance & CryptoPayments & trading

Responded79 ms12 / 22
io.github.hsharmanov02/red-web-utils

17 pay-per-call web, finance, legal and onchain tools for AI agents. USDC on Base via x402/MPP.

Finance & CryptoPayments & trading

Responded80 ms12 / 22
com.x402supply/entity-resolve

Fuzzy entity resolution and dedupe for names, addresses, and company records. $0.02/call via x402.

Finance & CryptoPayments & trading

Responded80 ms12 / 22
SPORE x402 Attestation

Signed x402 attestations and bounty-packet preflight checks, paid per call in USDC on Base.

Finance & CryptoPayments & trading

Responded81 ms12 / 22
Shopify Change Intelligence

Monitor public Shopify stores: free snapshot, paid change intel, competitor reports via x402 USDC.

Finance & CryptoPayments & trading

Responded82 ms12 / 22
HourProof — volunteer/service hour ledger (no AI)

Deterministic check of logged service hours: bad dates, impossible totals, duplicates. No AI.

Finance & CryptoPayments & trading

Responded82 ms12 / 22
Professor Sausages — On-chain

EVM gas, Chainlink prices, token-safety, swap quotes, ENS, OFAC & NFT via x402.

Finance & CryptoPayments & trading

Responded84 ms12 / 22
Base Tx Preflight

Simulate a Base tx before signing: revert reason, gas limit, full fee in ETH/USD. Paid x402.

Finance & CryptoPayments & trading

Responded84 ms12 / 22
PayperDrop

Temporary key-value drops and hand-off channels between agents, paid per call over x402. Reads free.

Finance & CryptoPayments & trading

Responded84 ms12 / 22
Tantra Authority Catalog

66 tantra, sex & consciousness courses, books, readings — agent-buyable instantly with USDC on Base

Finance & CryptoPayments & trading

Responded86 ms12 / 22
PairMine

PairMine tools: Genesis status, eligibility, mint tiers for the AI-agent-only miner NFT on BSC.

Finance & CryptoPayments & trading

Responded86 ms12 / 22
com.x402supply/endpoint-diligence

Live x402 endpoint trust/diligence check before you pay it. $0.02/call via x402.

Finance & CryptoPayments & trading

Responded87 ms12 / 22
Next Generation Movers

Free US moving quotes for AI agents (long-distance nationwide, local DC/MD/VA). Optional x402 quote.

Finance & CryptoPayments & trading

Responded87 ms12 / 22
FreeTier Agent API

x402 or card pay-per-call: invoice JSON, DNS, whois, SSL, geocode, RSS feeds, sitemaps, QR codes

Finance & CryptoPayments & trading

Responded87 ms12 / 22
Invoice Purchase Order Matcher

Mechanically reconcile supplied purchase-order lines, invoice lines and goods receipts under expl...

Finance & CryptoPayments & trading

Responded87 ms12 / 22
x402 Market Intelligence + Russian Web Access

Check x402 endpoints before paying: liveness, price history, farm detection. Plus RU web access.

Finance & CryptoPayments & trading

Responded88 ms12 / 22

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