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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4138 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
Prior

Spend gate agents call before money moves. Buy with Stripe Checkout. Paid only when Stripe says so.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Proof of Stock

Is this stock token the real one? Checks Base and Robinhood Chain tokens against the issuers' lists.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Proxygate

Curated marketplace of real-world data APIs for AI agents, paid per call in USDC on Solana.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Pulse402 Oracle

Real-time Base & Solana liquidity, Polymarket orderflow, and pre-trade security via x402 V2.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
PYRESEC - AI Code Security Auditing

AI code security audits via x402 USDC: $0.01 scans, $0.50 audits, $5 auto-fixes. SAST/SCA.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Pyrimid Protocol

Agent-commerce MCP server for x402/USDC payments and affiliate splits on Base.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
RatchetX Forecast Arena

Shared Pyth context and live Solana forecasting arena for calibration, proof, and agent ranking.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
regexcronsql-validator

Valida regex, cron y SQL contra ejecucion real. Pago por llamada via x402/USDC.

Developer ToolsPayments & trading

Outdated checkNot measured5 / 22
RevClamp MCP Server

Zero-take-rate Stripe 2025-03-31.basil, Visa CE 3.0 & EU/XI VIES VAT guardrails MCP server.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
RevClamp MCP Server

Zero-take-rate Stripe 2025-03-31.basil, Visa CE 3.0 & EU/UK VIES VAT guardrails MCP server.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
RunOnProof — Payment Decision and Agent ID

Free agent identity and signed US supplier-payment decisions. Inspect first; verify portable proof.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Rychlá Hypo – Czech mortgages

Czech mortgage rates, payment comparison and max loan per bank for 6 major Czech banks.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Seneschal Data

Monero/Zcash payment webhooks + DeFi liquidation & Ethereum builder data over MCP. Free tier; x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
signals.edge graduation radar

pump.fun graduation radar for trading bots and AI agents. x402 USDC per scan, no key.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 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 checkNot measured5 / 22
Tariff Data

US stacked tariffs (MFN+301+232), daily-updated, Chinese labels, keyless, $49 x402 unlock

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
TaskMarket Data

Paid TaskMarket bounty data MCP: first 10 calls/mo FREE per wallet, then $0.001/call USDC (x402).

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Taskmarket Onchain API

On-chain receipts, balances, tx status and address activity, pay-per-call via x402 USDC on Base.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
textkit (paid)

Text and Unicode utilities for agents: homoglyphs, scripts, slugify, entropy, dates. Paid via x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Token risk x402

Pre-trade token safety checks for AI agents on Solana and Base. x402 USDC per call, no key.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Tollbooth Swap API

Token swaps and honeypot/rug checks for AI agents on 8 chains, paid per-call in USDC via x402.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
UNLAV CSV Reconcile

Compare CSV tables by key; report changes and ambiguous rows. 0.05 USDC on Base via x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
UNLAV Supplier Quote Compare

Compare complete supplier quotes with exact totals and shipping. 0.05 USDC on Base via x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Utilia Solana Transaction Evidence

Solana transaction diagnosis, simulation, token-risk evidence, and priority fees via x402 USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22

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