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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4726 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
Responded43 ms13 / 22
Responded43 ms13 / 22
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Responded46 ms13 / 22
Responded49 ms13 / 22
Responded49 ms13 / 22
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Responded49 ms13 / 22
Responded49 ms13 / 22
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Responded56 ms13 / 22
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dev.x402check/mcp

Preflight before paying any x402 tool (ok|caution|avoid + history). 1 free/wallet; then $0.01 Base.

Finance & CryptoPayments & trading

Responded60 ms13 / 22
Responded65 ms13 / 22
Gear & Glam — Lifestyle, Beauty & Tech Accessories Store

Search lifestyle, beauty, and tech products with live stock checks and 1-click checkout.

Finance & CryptoPayments & trading

Responded66 ms13 / 22
Responded67 ms13 / 22
AI HUNTERZ — Autonomous Crypto Intelligence

49 crypto intelligence APIs. Whale tracking, DeFi yields, alpha signals. Pay in USDC on Base.

Finance & CryptoCode & DevOps

Responded68 ms13 / 22
NullClear Arbiter

Autonomous x402 payment schema-escrow arbiter, spend firewall, failover & ERC-8004 Sybil oracle

Finance & CryptoPayments & trading

Outdated check68 ms13 / 22
io.github.OrionSmithers/agent-data-pro

Research articles and live crypto prices for AI agents via x402 on Base.

Finance & CryptoCode & DevOps

Responded78 ms13 / 22
io.github.builtforai/part-d-cap

Medicare Part D out-of-pocket cap: when you hit it, and what the payment plan changes

Finance & CryptoPayments & trading

Responded83 ms13 / 22
bot-check: Bitcoin Self-Custody & WorkSats MCP

Verify Bitcoin PSBTs, addresses, and descriptors; earn or spend WorkSats bearer credits.

Finance & CryptoPayments & trading

Responded88 ms13 / 22
Ilostat

ILOSTAT (International Labour Organization statistics) MCP — global labour market data via the…

Finance & CryptoData access / search

Responded93 ms13 / 22
io.github.EzeAlfaro/legible-check

On-chain RPC data for AI agents: block, gas, balance, tokens, receipts, decode. x402 USDC.

Finance & CryptoPayments & trading

Responded95 ms13 / 22

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