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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4145 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
Saudi Invoices (ZATCA Fatoora Phase 2 reporting & clearance)

Saudi ZATCA Fatoora Phase 2: AI agents report B2C and clear B2B tax invoices, stateless.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Saylor Innovations: pay-per-call data

271 x402 agent APIs: research, law, medicine, science, finance, public data, security and crypto.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
ScrapeMole Onchain

Pay-per-call x402 Base/Ethereum prices, DEX, ENS, gas, tokens, holders, balances, txs.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
ScrapeMole Pulse

x402 FX, time, weather, US NWS alerts, HN, holidays, geocoding for agents.

Data & AnalyticsPayments & trading

Outdated checkNot measured4 / 22
ScrapeMole Quotes

Pay-per-call x402 stock, ETF, index, FX and crypto quotes, OHLCV history, ticker and coin search.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Screenshot & PDF Capture API

Capture screenshots (PNG/JPEG/WebP) and generate PDFs from any URL. x402 payments.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
SCRIPTMASTERLABS — Robinhood RWA Intelligence

Robinhood Chain stock-token + prediction-market intelligence MCP. Read-only, evidence-first.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
SEC EDGAR Fundamentals

Normalized SEC EDGAR fundamentals. 3 of 6 tools free; the rest $0.04-$0.10 per call in USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Senegal Payments (Flutterwave — Orange Money / Wave)

Senegal payments for AI agents — Orange Money / Wave via Flutterwave. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Sentiment Analyzer API

Analyze text sentiment, emotions, confidence scores, and key phrases. x402 USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Serbia Invoices (SEF eFaktura national API)

Serbia SEF eFaktura invoices for AI agents: build UBL 2.1 SRB-CIUS, upload to SEF, query, cancel.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Singapore Payments (HitPay — PayNow QR)

Singapore payments for AI agents — PayNow QR via HitPay. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Sivut SEC Crypto Filing Radar

SEC EDGAR crypto filing radar MCP with x402-paid Base USDC data URLs.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Slovakia Payments (Stripe — cards / Apple Pay)

Slovakia payments for AI agents — cards / Apple Pay via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Slovenia Payments (Stripe — cards / Apple Pay)

Slovenia payments for AI agents — cards / Apple Pay via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Solana Delta

Live cached Solana decisions and delta feeds purchasable by AI agents through x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Solana Pool Liquidity Scanner API

Solana DEX pool liquidity depth — TVL, slippage, volume, Raydium/Orca/Meteora. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Solana Priority Fee Estimator API

Solana priority fees at 6 levels, cost in SOL/USD, congestion. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Solana Token Launch Scanner API

New Solana token launches — pump.fun, Raydium, PumpSwap. Price, liquidity, volume. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
South Africa Payments (Paystack — cards / EFT)

South Africa payments for AI agents — cards / EFT via Paystack. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Spain Payments (Stripe — cards / Apple Pay)

Spain payments for AI agents — cards / Apple Pay via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Stack Facts

Signed EOL dates, exploited CVEs and LLM prices; pay per call in USDC, no account, no daily cap.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Stock Price API

Real-time stock quotes — price, change, volume, market cap. x402 micropayment.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
SuperCatch

Search SuperCatch trading cards, prices, and stores; sign in to read your orders and watchlist.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22

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