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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3329 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
MoneyTools Transcripts

STT + SRT/VTT; 3-hour async jobs; dTelecom-compatible file API; x402 $0.005/min, no prepaid credits

Finance & CryptoPayments & trading

Responded69 ms13 / 22
ZeroStart Paid Service Tools

Bounded data, document, web-quality, and operations services purchased with USDC through x402.

Finance & CryptoPayments & trading

Outdated check70 ms13 / 22
Fiscalité française ouverte, par BENSAID Avocats

Official French tax texts, dated and sourced: 237 treaty instruments by article, BOFiP, CGI, LPF.

Finance & CryptoPayments & trading

Responded72 ms13 / 22
auto-fiat board

Agent service board: browse and post offers/wants, threads, matches. Free reads, x402 USDC fees.

Finance & CryptoPayments & trading

Responded72 ms13 / 22
DevX Agent Hub

x402 pay-per-call agent tools: token safety/honeypot check, speech to text, TTS, translate, OCR, web

MediaAI / LLM tooling

Responded72 ms13 / 22
Halves

Split shared costs fairly: who owes whom, in the fewest payments. No account.

Finance & CryptoPayments & trading

Responded72 ms13 / 22
Billsprig Invoice Maker

Make invoice, quote and receipt PDFs from a chat: totals, tax, 26 currencies. Free, nothing stored.

Finance & CryptoPayments & trading

Outdated check72 ms13 / 22
io.github.ryuamarines/email-validator

Validates email syntax and MX records. x402 payment required (Base mainnet USDC).

Finance & CryptoPayments & trading

Outdated check72 ms13 / 22
QRCode.Pub tools

Free QR code images; paid web page → Markdown, page metadata and file hosting via x402 (no API key).

MediaFile & docs

Outdated check72 ms13 / 22
com.insidercable/feeds

Point-in-time Congress, BTC-ETF-flow, insider, token-launch and options-IV feeds; free + x402

GovernmentPayments & trading

Responded73 ms13 / 22
RedTape: Spain, Mexico & Colombia business data

Free ES/MX/CO tools, plus paid mx_supplier_dossier x402 pointer ($0.03).

Finance & CryptoPayments & trading

Responded74 ms13 / 22
Partly Exact Split

Split expenses in cents with equal/weighted shares and payer advances. No account or payments.

Finance & CryptoPayments & trading

Responded74 ms13 / 22
AgentGas

Quotes, capacity and order status for buying native gas on Base/Arbitrum/Optimism/Polygon via x402.

Finance & CryptoPayments & trading

Responded74 ms13 / 22
US Economic, SEC EDGAR & On-Chain Data (x402)

21 paid tools: US macro data, SEC EDGAR filings, on-chain EVM reads. Settled in USDC on Base.

Finance & CryptoPayments & trading

Outdated check74 ms13 / 22
Agent Tools (x402 pay-per-call)

URL-to-Markdown ($0.002) and summarization ($0.003), paid per call in USDC on Solana via x402.

Finance & CryptoPayments & trading

Responded75 ms13 / 22
MoneyTools x402 Status & MCP Check

Live health leaderboard of x402 paid endpoints, plus an MCP server readiness check

Finance & CryptoPayments & trading

Responded75 ms13 / 22
AgentKYB

Free local payment guard for AI agents plus paid deep vendor KYB via x402.

Finance & CryptoPayments & trading

Outdated check75 ms13 / 22
FetchDelta

Web Markdown, diffs, pricing and daily watches. Paid x402 Base USDC tools; free previews.

Finance & CryptoPayments & trading

Responded76 ms13 / 22
Myworker — 20 paid crypto & AI micro-APIs (x402)

20 paid micro-APIs: token price, DeFi APY, FX rates, web scraping. Pay USDC per call.

Finance & CryptoBrowser & web scraping

Outdated check76 ms13 / 22
x402 Web Extract

Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

Finance & CryptoPayments & trading

Responded77 ms13 / 22
io.github.Goatincrypto/aegis-x402-mcp

On-chain token security, honeypot simulation, KYA wallet trust, and x402 PreFlight audits on Base.

Finance & CryptoPayments & trading

Outdated check77 ms13 / 22
oassis — web scraping, crawling and browser control for AI agents

Web Tools and Web Tasks for AI agents. 100-credit MCP trial; API-key credits or x402.

Finance & CryptoBrowser & web scraping

Responded78 ms13 / 22
Quietwork Payouts

Check crypto payout lists (EIP-55, dupes, totals) + Cherum batch-payout link. 0.3% fee disclosed.

Finance & CryptoPayments & trading

Responded79 ms13 / 22
Tommy Accounting

Free UK sole-trader tools: VAT & MTD checks, tax set-aside, expense categories, bookkeeper requests.

Finance & CryptoPayments & trading

Outdated check79 ms13 / 22

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