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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3301 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
Privi Verify

Manufacturing lot verification and chain of custody for AI agents, paid per call in USDC (x402).

Finance & CryptoPayments & trading

Outdated check380 ms15 / 22
Tolca

Know who you are paying before you pay: Québec contractor and company checks, plus web search. x402.

Developer ToolsData access / search

Responded387 ms15 / 22
Vibes-Coded Agent Tools

Web search, page-to-markdown, memory, leases and proof for agents. x402, no signup.

Developer ToolsData access / search

Outdated check406 ms15 / 22
PDF Text Extractor for AI Agents

x402 PDF text, pages, and metadata for AI/RAG. $0.0015 per successful PDF.

Developer ToolsCode & DevOps

Outdated check415 ms15 / 22
Verse by A-to-Mind

Ask Verse anything with sources, plus code review, translation and more paid per call over x402.

Developer ToolsCode & DevOps

Outdated check417 ms15 / 22
Strumenti di calcolo dello Studio Notarile Chianese

Italian home purchase, inheritance and gift tax calculators by a notary's office. No login.

Finance & CryptoPayments & trading

Responded457 ms15 / 22
Magneta Contract Risk

Smart-contract risk reports for AI agents on 20 EVM chains, paid per call via x402 ($0.02 USDC).

Finance & CryptoPayments & trading

Outdated check457 ms15 / 22
Aether testnet wallet

Testnet wallet for AI agents on Aether: pay, get paid and buy from paid APIs, with spending caps.

Finance & CryptoPayments & trading

Responded464 ms15 / 22
DAEMON — on-chain generative art (8004 NONCE + KOINE)

Mine, mint and verify 8004 NONCE proof-of-work art on Ethereum L1.

Finance & CryptoPayments & trading

Outdated check488 ms15 / 22
FMCSA Carrier Intelligence

US carrier vetting on FMCSA data: authority, insurance, safety, identity links. Pay per call (x402)

Developer ToolsCode & DevOps

Outdated check489 ms15 / 22
TradingCalc MCP: Options, Forex, Risk Stats, Prediction Markets, On-Chain & Crypto Futures

Deterministic options, forex, risk, on-chain & futures math. Not AI estimates. Tools: tradingcalc.io

Finance & CryptoCode & DevOps

Responded493 ms15 / 22
Agent Margin Router

38 x402 pay-per-call tools for AI agents (USDC/USDT on Base): web, crypto, on-chain, geo, packages

Finance & CryptoPayments & trading

Outdated check494 ms15 / 22
Tollkit Crypto

Crypto news, perps, market pulse, price history and token checks for AI agents. USDC per call.

Finance & CryptoCode & DevOps

Responded495 ms15 / 22
McpStamp Loan Amortization

Loan and lease schedules: level payment, interest split, early settlement cost and journals.

Finance & CryptoPayments & trading

Responded499 ms15 / 22
Free Agent Tools

21 free no-auth tools: pitch roast, Kyushu discount, Japan visa fee, luggage, tax-free.

Developer ToolsCode & DevOps

Responded513 ms15 / 22
Website Change Monitor & Deterministic Diff

Deterministic webpage change detection, hashes and text diffs for recurring monitoring via x402 MCP.

Developer ToolsMonitoring & observability

Outdated check513 ms15 / 22
GhostSwap

GhostSwap — non-custodial crypto swaps across 1,600+ coins.

Finance & CryptoCode & DevOps

Outdated check520 ms15 / 22
0xinsider

Polymarket sports and esports data: wallet grades on settled P&L, large trades, markets.

Finance & CryptoPayments & trading

Outdated check520 ms15 / 22
Tolca

Web search + clean page text with sha256 proof, and company, sanctions and licence checks (x402)

Finance & CryptoData access / search

Outdated check521 ms15 / 22
VibeRaven

Check Supabase migrations for RLS and grant gaps; fixes for Supabase, Vercel, Stripe errors.

Finance & CryptoPayments & trading

Outdated check522 ms15 / 22
Article Content Extractor for AI Agents

x402 clean article text and metadata for AI/RAG. $0.002 per successful article.

Developer ToolsCode & DevOps

Outdated check525 ms15 / 22
three.ws 3D Studio (free)

Free text/image → 3D: generate, rig, avatar-ify, and refine GLB models. No auth, no payment.

Finance & CryptoPayments & trading

Outdated check529 ms15 / 22
Florida Business Verify (Sunbiz records)

Verify a Florida business in official Sunbiz records: status, agent, officers. 0.10 USDC via x402.

Finance & CryptoPayments & trading

Outdated check544 ms15 / 22
Signal Oracle

Pay-per-call change-intelligence feeds for AI agents over x402 (deps, security, regs, tariffs)

Developer ToolsCode & DevOps

Outdated check548 ms15 / 22

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