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

3302 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
Kristo Intelligence

Pay-per-call DeFi intelligence for AI agents on Base — x402, USDC, no keys.

Finance & CryptoPayments & trading

Outdated check958 ms15 / 22
Agoranome seller tools

Get your x402 API found and bought: lint, Bazaar rank, buyer panel, demand gaps. Paid in USDC.

Finance & CryptoPayments & trading

Outdated check985 ms15 / 22
Locus

Official US-address public records: zoning, flood, parcel, permits, taxes. Free look, x402 paid.

GovernmentCode & DevOps

Responded995 ms15 / 22
Stelar Signals

Crypto market signals and portfolio telemetry. 6 tools pay-per-call in USDC, no API key.

Finance & CryptoCode & DevOps

Responded996 ms15 / 22
Prediction Market X Sentiment

Polymarket & Kalshi sentiment from X (Twitter) via Grok. Free daily scores; live scoring via x402.

Developer ToolsCode & DevOps

Responded1022 ms15 / 22
agent-tools (x402 + MCP + A2A directory)

Discover x402 services, MCP servers and A2A agents by intent — agent-tools.cloud directory.

Developer ToolsCode & DevOps

Outdated check1067 ms15 / 22
Calculadoras laborales y tributarias PY/EC

Paraguay & Ecuador tax and labor calculators: IVA, severance, payroll, income tax, fines, RUC/CDC.

Finance & CryptoPayments & trading

Outdated check1156 ms15 / 22
Cryptominium

What a crypto position would really sell for: measured exit costs, address and transaction lookups.

Finance & CryptoData access / search

Outdated check1156 ms15 / 22
VibeCart

Agent-native commerce with trusted catalog, durable carts, and Stripe Checkout via MCP and UCP.

Finance & CryptoPayments & trading

Responded1209 ms15 / 22
Agent Utility Suite (x402)

SEC red-flag alerts & company dossiers, token risk, wallet checks, x402 preflight, scraping, OFAC.

Finance & CryptoPayments & trading

Responded1236 ms15 / 22
io.github.gosadu/loophole-tape

pump.fun & Robinhood Chain launch data: radar, risk checks, delta feed, datasets, keys. x402 USDC

Finance & CryptoPayments & trading

Responded1311 ms15 / 22
io.github.CHANGCHINFU/mcp-gauge

Verify official facts with Bitcoin-anchored proof. 180+ signals, x402 pay-per-call.

Finance & CryptoPayments & trading

Responded1312 ms15 / 22
India API

Free Indian data and AI: pincode, IFSC, GSTIN, holidays, GST invoice, OCR, calculators, translation.

Finance & CryptoPayments & trading

Outdated check1328 ms15 / 22
NakamotoNotes Bitcoin Barometer

Bitcoin Barometer: Heat Score, BTC price, ten indicators and daily history. Read-only.

Finance & CryptoPayments & trading

Outdated check1342 ms15 / 22
JPVerify

Japan company, T-number, invoice issuer and address checks for AI agents, paid per call via x402.

Finance & CryptoPayments & trading

Outdated check1357 ms15 / 22
Pyth Pro MCP Server

Real-time and historical price feeds for 500+ crypto, equities, FX, and commodities assets.

Finance & CryptoCode & DevOps

Responded1359 ms15 / 22
io.github.Amalgix-io/Amalgix

Cross-model evidence pipeline for financial filings & contracts. x402 pay-per-call.

LegalCode & DevOps

Responded1377 ms15 / 22
SwapEazi

SwapEazi is the AI agent for managing cross-border payments.

Finance & CryptoPayments & trading

Outdated check1392 ms15 / 22
MIZAN · Proof before payment

Check before you pay. Prove to get paid. Signed answers on any agent, against your own bar.

Finance & CryptoPayments & trading

Outdated check1481 ms15 / 22
Agent Discovery Board by SarnAI

Free directory of MCP servers and x402 APIs for AI agents. Find them, or list your own in one call.

Finance & CryptoPayments & trading

Outdated check1536 ms15 / 22
QuantCalc Retirement Engine

Retirement Monte Carlo, tax-aware withdrawals, 2026 tax calculators, RMD, IRMAA, every-state tax.

Finance & CryptoPayments & trading

Outdated check1577 ms15 / 22
AgentPay — trust routing + spend caps for x402 agents

Buyer-side trust oracle + capped sessions for x402 agents: verified_route, receipts, 17 free tools.

Developer ToolsCode & DevOps

Responded1663 ms15 / 22
FiLot: gold prices and gold bar records

Gold price in any currency, zakat on gold, bar record checks, Indonesian dealer prices and tax.

Finance & CryptoPayments & trading

Responded1846 ms15 / 22
x402 & MCP Server Index (Tanod)

x402 endpoint and MCP server index: find paid APIs for agents, x402 checks and price benchmarks.

Finance & CryptoPayments & trading

Outdated check1874 ms15 / 22

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