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

3324 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
Solana Cleanup

Read-only Solana and crypto reserve-recovery scans, pricing, chain facts, and methodology.

Finance & CryptoPayments & trading

Responded488 ms14 / 22
Cryptowisser News

Latest crypto news, stories and articles from Cryptowisser, with news cards linking to full stories.

Finance & CryptoPayments & trading

Responded492 ms14 / 22
Freedom Engine M2M Gateway & Task Clearinghouse

Zero-reg HTTP 402 M2M Gateway, 15 AI Tools, 120B LLM & Escrow Clearinghouse (L402/x402).

Developer ToolsCode & DevOps

Outdated check499 ms14 / 22
Flow — Base quotes & contract safety for agents

Best-execution quotes and contract safety checks on Base for AI agents, paid per call via x402.

LegalCode & DevOps

Outdated check505 ms14 / 22
Ironflow: Hyperliquid data

Hyperliquid data and liquidation alerts for AI agents: fills, candles, funding, wallet analytics.

Finance & CryptoPayments & trading

Outdated check509 ms14 / 22
Penniless Data Utilities

Ten x402-paid tools for JSON, YAML, cron, diff, text, DNS, WHOIS, GitHub, crypto, and email.

Finance & CryptoCommunication & messaging

Outdated check513 ms14 / 22
codes.find/verified-codes

Verified discount & referral codes for crypto exchanges, cards and more — tested first-hand.

Finance & CryptoPayments & trading

Responded515 ms14 / 22
NodeProxy Web Surface Markdown Parser

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

Finance & CryptoPayments & trading

Outdated check519 ms14 / 22
AUN — Agent Upgrade Network

Audit AI agents' tool calls, planning and memory; Base on-chain data; pay per call via x402.

Finance & CryptoKnowledge & memory

Responded524 ms14 / 22
Portfolio Terminal

Dated ETF, stock and calendar data, plus tax-loss, withholding and fee math on your holdings.

Finance & CryptoPayments & trading

Responded525 ms14 / 22
Vehicle History by VIN

Quote a $9.99 vehicle history report by VIN, open Stripe Checkout for the human, read the report.

Finance & CryptoPayments & trading

Responded529 ms14 / 22
Checkpoint402

Pay-per-call tx explainer, DeFi yields, token safety, SEC 8-K and OFAC data via x402 (USDC on Base).

Finance & CryptoPayments & trading

Responded530 ms14 / 22
Augenix

Free preview websites for local trades, then Stripe Checkout for $29/mo hosting.

Finance & CryptoPayments & trading

Responded533 ms14 / 22
Losbeto — Market Data for AI Agents

Cross-asset market data, LLM gateway and ML forecasts for AI agents. USDC via x402 + MPP.

Finance & CryptoData access / search

Responded533 ms14 / 22
Probity Wallet Reputation

Pre-transaction risk screening for Ethereum addresses: signed score, sanctions, audit trail.

Finance & CryptoPayments & trading

Responded534 ms14 / 22
Imperium MCP Gateway — Universal 490+ Tool Discovery, Safe-Proxy & Router

Single-connection MCP & A2A gateway indexing 490+ verified tools with x402 & MPP settlement.

Finance & CryptoPayments & trading

Outdated check535 ms14 / 22
AI Agent Safety Foundational Certificate

AI Agent Safety Foundational Certificate: a wallet-signed 40-task exam. First 3 attempts free.

Finance & CryptoPayments & trading

Responded538 ms14 / 22
AgentFilings

SEC filings, XBRL earnings, Form 4 insiders for ~2,800 US SEC filers. x402 pay-per-call, no signup.

Finance & CryptoPayments & trading

Outdated check538 ms14 / 22
Alternomy — Swedish personal-finance calculators

Swedish personal-finance calculators with 2026 tax rules: rent vs buy, leasing, savings, mortgages

Real Estate & PropertyData access / search

Responded540 ms14 / 22
BotsRated (beta)

Signed checks of x402 sellers on Base and remote MCP servers, before your agent pays.

Finance & CryptoPayments & trading

Outdated check540 ms14 / 22
Terminal Tax

Tax software: your AI agent sends the facts, we calculate and e-file; you review and sign.

Developer ToolsCode & DevOps

Responded543 ms14 / 22
Imperium Workflow Studio — Multi-Agent DAG & Pipeline Executor

Execute multi-step A2A & MCP agent workflows with atomic x402/MPP settlement.

Finance & CryptoAutomation & workflows

Outdated check545 ms14 / 22
Imperium Live Multi-Specialist A2A Swarm Mesh Coordinator

Coordinate multi-specialist A2A agent swarms with cryptographic handshakes and x402 settlement.

Finance & CryptoPayments & trading

Outdated check547 ms14 / 22
io.github.onrampbtc/proof-of-custody

Bitcoin custody scores, failure registry, ETF custody, stablecoin and x402 data, source router.

Finance & CryptoPayments & trading

Responded554 ms14 / 22

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