MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

4136 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
App Store Change Intelligence

Track App Store apps: free snapshot, paid review & sentiment intel via x402 USDC.

Finance & CryptoPayments & trading

Responded72 ms11 / 22
x402-snap

Pay-per-call browser rendering and x402 marketplace ranking for AI agents, billed via USDC.

Finance & CryptoPayments & trading

Responded75 ms11 / 22
Quay

Pay-per-call TRON fee, payment, and address checks. Agents pay USDT or USDC.

Finance & CryptoPayments & trading

Responded75 ms11 / 22
Apex Edge — x402-paid machine services

x402-paid MCP tools & data APIs for agents — USDC on Base + Solana

Finance & CryptoPayments & trading

Responded76 ms11 / 22
Kit Lite

Instant x402 spend-cap pack for agents. get_quote then buy_intel_pack 5 USDC Base. No human.

Finance & CryptoPayments & trading

Responded81 ms11 / 22
dev.fly.solidus-x402/solidus

Solana pre-trade safety for agents: rug check, honeypot sell-sim, drainer scan, tx preflight.

Finance & CryptoPayments & trading

Responded97 ms11 / 22
dev.fly.obol-x402/obol

Pre-trade safety verdicts for agents: token rug/honeypot, calldata guard, wallet risk — signed x402.

Finance & CryptoPayments & trading

Responded97 ms11 / 22
Hermes Agent Data Services (x402)

x402 paid on-chain data: token report, contract DD, pool risk, wallet profile, Robinhood Chain.

Finance & CryptoPayments & trading

Responded118 ms11 / 22
Manta Signal Gate

Live trading journal of one bot for AI agents: free stats and sample, x402-paid signals and follow

Finance & CryptoPayments & trading

Responded119 ms11 / 22
io.github.Ainode-tech/cache-proxy

LLM caching proxy (x402 USDC on Base) - exact + semantic cache. Free health.

Finance & CryptoPayments & trading

Responded121 ms11 / 22
io.github.Ainode-tech/swiss-army

22 utility tools (x402 USDC on Base): currency, PDF, image, GDPR. Free health.

Finance & CryptoPayments & trading

Responded126 ms11 / 22
io.github.Ainode-tech/accounting-mcp

8 EU accounting (x402 USDC on Base): reconcile, VAT, invoicing. Free health.

Finance & CryptoPayments & trading

Responded127 ms11 / 22
io.github.ryuamarines/email-extractor

Extracts emails from texts. x402 payment required (testnet USDC).

Finance & CryptoPayments & trading

Responded131 ms11 / 22
Speak

Text to natural speech as MP3: 38 voices, 7 languages, 1,000 chars per call. Paid per call, x402.

Finance & CryptoPayments & trading

Responded132 ms11 / 22
CBROS Cardano NFT Minter

Pay-and-mint Cardano NFT (CIP-25) in one atomic tx. Non-custodial. MCP-native. Mainnet.

Finance & CryptoPayments & trading

Responded137 ms11 / 22
observer.blacklight/signals

Realizability-gated Hyperliquid & Polymarket wallet copyability, risk & smart-money signals.

Finance & CryptoPayments & trading

Responded147 ms11 / 22
Depcheck

Known vulnerabilities for exact package versions from OSV, with fixes. Paid per call, x402.

Finance & CryptoPayments & trading

Responded187 ms11 / 22
io.github.mytab0r/pxbt-x402

Thai DTV/METV visa package pre-check over x402 (USDC on Base).

Finance & CryptoPayments & trading

Responded214 ms11 / 22
ai.tachyo/token-safety

Instant rug-check for any EVM or Solana token, distilled to one clear 0-10 risk verdict.

Finance & CryptoPayments & trading

Responded243 ms11 / 22
KAI Router

Find pay-per-call x402 tools (USDC on Base) for any task, ranked by relevance and real demand.

Finance & CryptoPayments & trading

Responded251 ms11 / 22
ai.tachyo/verify

Cryptographic proof of wallet ownership in two steps, with no keys and no custody.

Finance & CryptoPayments & trading

Responded268 ms11 / 22
FHI MCP Server Security Audit

Free payment guide and Base-USDC x402 MCP security, package, domain, and SEC tools.

Finance & CryptoPayments & trading

Responded306 ms11 / 22
Atinamos Agent Shop

Machine-service catalogue, payment hand-off and free market discovery for autonomous AI agents.

Finance & CryptoPayments & trading

Responded331 ms11 / 22
LeadFuzion Agent Store

US probate and pre-probate lead packages by county. No account; pay per package by card or USDC.

Finance & CryptoPayments & trading

Responded350 ms11 / 22

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