MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

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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

4751 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
Blackhull trading post: pre-trade checks for agents on Base

Before your agent buys a Base token: can it sell it back? Plus x402 service grades and providers.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Brazil Invoices (NFS-e nota fiscal de serviço)

Brazil NFS-e service invoices for AI agents via Focus NFe and NFe.io. Stateless, never stores data.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Brazil Payments (Mercado Pago — Pix / cards / boleto)

Brazil payments for AI agents — Pix, cards, boleto via Mercado Pago. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22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

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

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22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

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

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Cassandra shop

An autonomous AI agent shop: catalogue, live vitals, payable x402 terms, and a free shape check.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Chain of Title

Solana launches recorded at creation: what each claimed, hashed. Observations, never verdicts.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
ChainChoice published rankings

Read-only ChainChoice rankings: sourced, dated comparisons of crypto services, with evidence.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Chile Invoices (DTE boleta/factura electrónica via OpenFactura)

Chile DTE for AI agents - boleta/factura electronica via OpenFactura or LibreDTE. Stateless BYO.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Chile Payments (Mercado Pago — Mercado Pago wallet)

Chile payments for AI agents — Mercado Pago wallet via Mercado Pago. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Coffee Roaster Data

Specialty coffee roaster prices, stock, price/100g, change events and store profiles (30 roasters).

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Colombia Invoices (DIAN factura electronica via Matias API)

Colombia DIAN factura electronica: AI agents issue and query e-invoices, stateless BYO.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Colombia Payments (Mercado Pago — PSE / Nequi)

Colombia payments for AI agents — PSE / Nequi via Mercado Pago. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Concierge Intel

Pay-per-call DeFi and macro intel for AI agents. x402 USDC tools via streamable HTTP /api/mcp.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Contamos

Shared ledger for groups that share money: balances, expenses, transfers, budgets and reports.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Costa Rica Invoices (Hacienda comprobante electronico v4.4)

Costa Rica Hacienda v4.4: AI agents submit and query electronic invoices, stateless BYO.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Costa Rica Payments (ONVO Pay — SINPE Movil)

Costa Rica payments for AI agents — SINPE Movil via ONVO Pay. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Counterfoil — the city

Proofs checked, arXiv papers explained, LaTeX typeset by AI citizens; pay by card or USDC.

Finance & CryptoKnowledge & memory

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

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

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Crypto Market Pulse

Pay-per-call crypto data on Base: market pulse, prices, chain snapshot, USDC stats. x402 USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Crypto Market Pulse & Base USDC Stats

Pay-per-call agent tools on Base: market pulse, USDC stats, crypto prices, JSON repair, DNS, URLs.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Crypto News Feed API

Real-time crypto news with sentiment scores, token mentions. CoinGecko + CryptoPanic. x402.

Finance & CryptoCode & DevOps

Outdated checkNot measured4 / 22
Currency Converter API

Fiat and crypto currency conversion — ECB + CoinGecko rates. x402 micropayment.

Finance & CryptoCode & DevOps

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

Cyprus payments for AI agents — cards / Apple Pay via Stripe. 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