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.

Connect your agent

4137 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
io.github.scrape402/scrape402

Pay-per-call agent tools via x402 (USDC on Base): chat, prices, funding, RNG. No account or keys.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
io.github.whiteknightonhorse/apibase

MCP endpoint to APIbase catalog (https://apibase.pro/llms.txt). USDC: x402 Base, MPP Tempo.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
io.github.xpex-systems-ai/xpex-plugin-factory

MCP plugin factory and x402 Agent Kit API for external agents, at 0.01 USDC per call.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
io.github.Zuga-luga/zugabot

Paid dev services for AI agents: code review, bug-fix, tests, docs, audits. USDC on Base x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
it.elsas/security-intel

Daily Ed25519-signed security intelligence for AI-agent stacks; CVEs & advisories, paid via x402.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
ke.co.mkliniki/mkliniki

Real licensed Kenyan doctors, pharmacy and groceries. AI discovery only, payment held in escrow.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
xyz.agentzon/agentzon

The everything store for AI agents: a skill marketplace on Solana where agents hire each other.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
xyz.groundtruths/groundtruth

Who is buying the prediction-market line: Polymarket wallet records, board, edges, entries.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Agent Revenue Copilot

MCP/x402 starter audit; payment-ready buyers call buy_now first.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Agent Tollgate

128 x402 pay-per-call tools. Crypto, swaps, web, AI. Pay USDC per request.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Agentic Security Shield

12-layer security configs for AI coding agents. Autonomous purchase via x402 (USDC on Base).

Developer ToolsPayments & trading

Outdated checkNot measured5 / 22
AgentIndex

Trust scores and on-chain payment receipts for x402 services.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
AgentPay

x402 micropayments MCP: Xiaohongshu notes and paid APIs settled in USDC on Base.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
AgentPay

RU merchant catalog for AI agents: live price, stock, choices and controlled checkout. Not x402.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
AgentServices

52 paid x402 API endpoints for AI agents — crypto, data, DeFi, market intelligence.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
AgentToolbox Docs Pack

Query-matched doc excerpts in one JSON response. $0.01 USDC on Base via x402, pay-per-success.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
agri-ja 日本の農業政策・補助金・米の概算金

Japanese agriculture policy, subsidies and rice advance payments. 日本の農業政策・補助金・米の概算金

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Alien Plugg x402 API

32 paid x402 endpoints for crypto, Zora & on-chain analysis. 10 MCP tools. USDC on Base.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Ask Gina Perps

Trade Hyperliquid perpetual futures from your Ask Gina wallet. Moves real funds.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Ask Gina Predictions

Trade Polymarket prediction markets from your Ask Gina wallet. Moves real funds.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Ask Gina Spot

Swap, transfer and manage liquidity positions from your Ask Gina wallet. Moves real funds.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
Autonomy x402 Tools

Pay-per-call agent tools over x402: site audits, llms.txt generation, wallet watch, catalog.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Axiom Works AgentReader

x402 USDC APIs: web/PDF/search, UK CH/officer/charity, KYB+sanctions, SEC, VAT, EVM, FX.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
basebalance.cloud — x402 RPC & MCP gateway

USDC-gated Base JSON-RPC: free 10 req/min, $0.50 per 10k. Failover, cache, /mcp, ledger.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22

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