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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3298 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
Arabic Pipeline API

Pay-per-call Arabic text, audio and document utilities over x402. USDC on Base, no API key.

Finance & CryptoPayments & trading

Responded79 ms15 / 22
Arc & Ledger Tax Reference

Read-only US tax reference for notices, deadlines, filing screens, and clearly labeled estimates.

Finance & CryptoPayments & trading

Outdated check79 ms15 / 22
EcoAloha

Search and compare outdoor experiences. Public keyless API; booking and payment happen on Viator.

Finance & CryptoPayments & trading

Outdated check80 ms15 / 22
NanoParse

Clean Markdown from any URL with Litmus trust signals. $0.005 per page via x402, no account.

Developer ToolsFile & docs

Outdated check81 ms15 / 22
Nightshift Labs: link, token & signature pre-checks

Paid x402 pre-checks for agents: phishing links, Base tokens, EIP-712 permits, calldata, DNS.

Finance & CryptoPayments & trading

Outdated check83 ms15 / 22
Solana Token Intelligence

Solana token due-diligence: 3-source fused risk verdict incl. LP-lock depth. $0.01 via x402.

Finance & CryptoPayments & trading

Outdated check84 ms15 / 22
Crypto Link Check

Check crypto links for phishing lookalikes of wallets, exchanges and dapps before wallet connect

Finance & CryptoPayments & trading

Outdated check86 ms15 / 22
WattCoin

Agents earn WATT on Solana: register with no wallet, claim tasks, build a reputation score.

Finance & CryptoPayments & trading

Responded88 ms15 / 22
Rozo Checkout

Pay OpenRouter and Coinbase payment links with USDC, USDT, ETH, BNB, POL, SOL or BTC Lightning.

Finance & CryptoPayments & trading

Responded88 ms15 / 22
Prospect Intelligence

B2B company research and work-email lookup for AI agents. Pay per call in USDC on Base via x402.

Finance & CryptoPayments & trading

Responded89 ms15 / 22
Signal Desk paid tools

x402-paid tools: render pages, host files, delayed callbacks, pump.fun launch feed, trend radar

Developer ToolsCode & DevOps

Outdated check92 ms15 / 22
AgentEconomy Compliance API

Paid KYC, AML, and regulatory risk assessment over MCP via x402 USDC micropayments on Base.

Finance & CryptoPayments & trading

Responded93 ms15 / 22
Chainflip Broker as a Service

Native cross-chain swaps: Bitcoin, Ethereum, Solana, Polkadot, Tron, Arbitrum. Quote, swap, track.

Finance & CryptoPayments & trading

Outdated check93 ms15 / 22
pump.fun launch feed + trend radar

Live pump.fun launches matched to Google Trends and Polymarket topics; pay per call with x402

Developer ToolsCode & DevOps

Outdated check99 ms15 / 22
DevX Token Snapshot

ERC-20 price, liquidity, pools, holder hints, risk flags on 7 EVM chains. Paid 0.003 USDC via x402.

Finance & CryptoPayments & trading

Outdated check100 ms15 / 22
PikaSim

Anonymous eSIMs, phone numbers, and SMS codes in 190+ countries. Crypto-paid; agents self-onboard.

Finance & CryptoCommunication & messaging

Outdated check100 ms15 / 22
Forest Factory

Paid x402 agent: API discovery,commerce availability/buyable,domain/package preflight,release asset

Developer ToolsCode & DevOps

Outdated check102 ms15 / 22
Mestre Prático • Brazil Retail & Commodities MCP

Brazil real-economy MCP: ANP fuels, SEFAZ groceries, CMED medicines, ANEEL tariffs & tax anatomy.

HealthcareCode & DevOps

Outdated check102 ms15 / 22
patternfetch

US stocks, ETFs, crypto → compact brief: patterns, S/R, regime + base rates vs baseline. Not advice.

Finance & CryptoCode & DevOps

Outdated check113 ms15 / 22
ccpcrate — Canadian CCPC corporate tax

Deterministic Canadian CCPC rate stack: small business deduction and grinds, Part IV, RDTOH.

Finance & CryptoPayments & trading

Outdated check114 ms15 / 22
AI Trading Signals

Live crypto trading signals for AI agents: entry, stop, target, reasoning and verified outcomes.

Finance & CryptoPayments & trading

Responded117 ms15 / 22
IleZa.pl

Editorial fair prices for products in Poland, plus a Polish net salary and tax calculator.

Developer ToolsCode & DevOps

Outdated check117 ms15 / 22
SpendPreflight

Preflight x402 payments. Base ERC-8004 agent #1151628; wallet binding verified Nov 3, 2026.

Finance & CryptoPayments & trading

Responded125 ms15 / 22
Company & Macro Data (x402)

Company registers (17 countries + LEI), KYB sanctions check (EU/OFAC/UK), FX, rates, inflation.

Developer ToolsCode & DevOps

Responded132 ms15 / 22

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