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

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
MoneyTools payment-safety suite

Call before paying any x402 seller: 402/OFAC precheck, verify, approval, ledger

Finance & CryptoPayments & trading

Responded89 ms12 / 22
Agent Checkout

AI shopping gateway for product search, inventory, carts, and merchant-hosted checkout.

Finance & CryptoPayments & trading

Responded93 ms12 / 22
Agent Nil — Act 0

Talk to Agent Nil before the Chain opens. Daily challenges. No wallets, no tokens, only the game.

Finance & CryptoPayments & trading

Responded95 ms12 / 22
Mat Web & Data Toolkit (x402, Cloudflare)

x402 web/data toolkit: tools, US$5 lead pack, free flapjax_check, paid Nostr relay

Finance & CryptoPayments & trading

Responded95 ms12 / 22
HOBO Works Agent Market

Fixed-price HOBO agent products, discovery feed, and direct checkout. Owner-only; no seller splits.

Finance & CryptoPayments & trading

Responded96 ms12 / 22
dev.workers.sebastiaan-ba3.mcpgateway/tools

Doormat Capital's paid x402 safety tools (token scan, HTTP security headers) for AI agents.

Finance & CryptoPayments & trading

Responded98 ms12 / 22
Greenhouse Jobs Snapshot (Base Sepolia)

Deterministic public Greenhouse jobs. Paid tool uses 0.001 test USDC on Base Sepolia only.

Finance & CryptoPayments & trading

Responded99 ms12 / 22
dev.workers.sebastiaan-ba3.x402lint/tools

Lints whether a paid API's 402 response speaks the x402 protocol correctly.

Finance & CryptoPayments & trading

Responded100 ms12 / 22
BR Intelligence

Brazil PTAX, CNPJ/KYB, CEIS-CNEP sanctions, PIX and boleto. Paid x402 MCP API (USDC on Base).

Finance & CryptoPayments & trading

Responded101 ms12 / 22
Dozo

PDF invoices (VAT by rate, EN/FR) and links to free in-browser PDF tools on dozokit.com.

Finance & CryptoPayments & trading

Responded101 ms12 / 22
HLWatch Hyperliquid Wallet Tracker

Live Hyperliquid wallet positions, recent trades with PnL, and fill alerts to Discord/Telegram.

Finance & CryptoCommunication & messaging

Responded101 ms12 / 22
GeekVault

51 tools para agentes de IA, pagadas por llamada via x402 (USDC/Base). Sin cuentas ni keys.

Finance & CryptoPayments & trading

Responded102 ms12 / 22
io.github.cassarebaser/steve-filter

Solana memecoin rug + creator-reputation checks for agents. PASS/CAUTION/FAIL + 0-100 score.

Finance & CryptoPayments & trading

Responded103 ms12 / 22
Vaanzari Commerce

Discover Banarasi sarees and manage authorized Vaanzari shopping workflows with hosted checkout.

Finance & CryptoPayments & trading

Responded105 ms12 / 22
markets.equitycapital/equitycapital-markets

Open ledger of U.S. share offerings from SEC EDGAR since 2002: IPOs, SPACs, shelves, withdrawals.

Finance & CryptoPayments & trading

Responded106 ms12 / 22
x402 Cartographer

Ranks x402 endpoints and Apify actors; real yield of Base LP pools. Pay per call via x402.

Finance & CryptoPayments & trading

Responded108 ms12 / 22
CryptoPulse Data API

Pay-per-call crypto market intelligence for AI agents. USDC on Base via x402.

Finance & CryptoPayments & trading

Responded109 ms12 / 22
com.tariffmonkee/mcp

Content, research, trust checks. Taiwan-specific: work permits, tax, property, fraud, localization.

Finance & CryptoPayments & trading

Responded110 ms12 / 22
RugShield

Solana token risk scans for AI agents, with batch scanning and trending-token discovery.

Finance & CryptoPayments & trading

Responded110 ms12 / 22
The 402 Wall

Buy and paint 10x10 pixel blocks on a billboard only AI agents can buy: $1.00 USDC via x402 on Base.

Finance & CryptoPayments & trading

Responded114 ms12 / 22
satledger timestamp receipt

RFC 3161 timestamps with no account, and a signed agent-ledger workspace. Paid per call over x402.

Finance & CryptoPayments & trading

Responded114 ms12 / 22
Machinepulse

Market data tools for the MCP ecosystem: server stats, events, search, leaderboards, package trends.

Finance & CryptoData access / search

Responded117 ms12 / 22
Lenius

Order from local Danish shops: products, pickup times, card payment and AltID age verification.

Finance & CryptoPayments & trading

Responded119 ms12 / 22
io.github.ajwentcrazy/lazareus

S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.

Finance & CryptoPayments & trading

Responded120 ms12 / 22

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