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
Paraguay Invoices (SIFEN e-Kuatia via FacturaSend)

Paraguay SIFEN e-Kuatia: AI agents issue and query electronic invoices, stateless BYO.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
PARALLAX

Robinhood Chain stock tokens vs their Chainlink price: live gaps, pool depth, graded agent calls.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
PayAI x402 Facilitator

Verify and settle x402 stablecoin payments; browse the PayAI Bazaar of x402-payable resources.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
PaymentOracle — Verifiable Multi-Rail Payment Receipts

PaymentOracle — ES256K-signed receipts for x402 payments on USDC+EURC (Base) and XRP+RLUSD (XRPL).

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Perpetual Funding Rates API

Perp funding rates across Binance, Bybit, OKX — open interest, sentiment. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Peru Invoices (CPE factura/boleta electrónica, SUNAT)

Peru CPE invoices for AI agents - issue, query, void facturas/boletas via SUNAT (2 backends).

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Peru Payments (Mercado Pago — Yape / PagoEfectivo)

Peru payments for AI agents — Yape / PagoEfectivo via Mercado Pago. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Philippines Payments (PayMongo — GCash / Maya / cards)

Philippines payments for AI agents — GCash, Maya, cards via PayMongo. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Poland Invoices (KSeF 2.0 national e-invoice API)

Poland KSeF 2.0 national e-invoices for AI agents: issue FA(3) faktura, query by KSeF number.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Poland Payments (Stripe — BLIK)

Poland payments for AI agents — BLIK via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Portugal Payments (Stripe — Multibanco)

Portugal payments for AI agents — Multibanco via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
preflight402

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
PressureDesk

Read-only BUY / WAIT / AVOID spend gate for paid APIs, MCP endpoints, and x402 routes.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
PutRoots

SF move agent: rentals with sources, no-SSN banking routes, and your move plan and drafts.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Qatar Payments (Tap Payments — cards / Apple Pay)

Qatar payments for AI agents — cards / Apple Pay via Tap Payments. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Qorevia Market Intelligence

Qorevia agent gateway for market intelligence, XAUUSD data and x402-payable tools.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
rainmaker-gateway

Free list of Rainmaker tools + paid need-to-tool router. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Romania Invoices (ANAF e-Factura national API)

Romania e-Factura invoices for AI agents: build UBL 2.1 CIUS-RO, upload to ANAF/SPV, query.

Finance & CryptoPayments & trading

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

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

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Rwanda Payments (Flutterwave — MTN MoMo)

Rwanda payments for AI agents — MTN MoMo via Flutterwave. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
SAIKYO: pay from Russia

USDT/RUB quote, wallet AML check, foreign Visa card terms, paying for foreign services from Russia

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Sardine: Kalshi crypto settlement history

How often Kalshi BTC/ETH/XRP contracts settled YES, counted not forecast, with a public record

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
SatoshiAPI — Bitcoin Intelligence via Lightning

Bitcoin intelligence API. Pay per call via L402 Lightning (10-200 sats). No accounts needed.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Saudi Arabia Payments (Tap Payments — mada / STC Pay)

Saudi Arabia payments for AI agents — mada / STC Pay via Tap Payments. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22

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