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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4101 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 Settle

x402 settle: 0.005 USDC/call, no key; verify, caps; free trial 50 calls/7 days

Finance & CryptoPayments & trading

Responded65 ms13 / 22
Agent Charts

Paid AI-agent tools ranked by real on-chain spend, wash trading filtered out. Updated daily.

Finance & CryptoPayments & trading

Outdated check66 ms13 / 22
Plover Solana swap quotes

Keyless Solana swap quotes (Jupiter) and token facts, with a link the human signs. No keys.

Finance & CryptoPayments & trading

Responded68 ms13 / 22
Axiom Solana Token Risk

Solana token risk: free preview tools; paid x402 full reports (Solana; swap-guard also Base).

Finance & CryptoPayments & trading

Responded68 ms13 / 22
KushBitx AgentProof

Safety checks for AI agents paying on Base: free SpendGuard, paid x402 token risk and preflight.

Finance & CryptoPayments & trading

Responded68 ms13 / 22
Northline ChainKit

Pay-per-call Base & Arc onchain facts for agents: address risk, USDC payment check, tx explain.

Finance & CryptoPayments & trading

Responded69 ms13 / 22
Igris Solana token safety

Solana token rug/honeypot checks: free quick check; full score paid via x402 (USDC Solana/Base).

Finance & CryptoPayments & trading

Responded69 ms13 / 22
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Outdated check70 ms13 / 22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
NameDrop

Check, quote and register or renew Basenames (name.base.eth), paying in USDC on Base. No ETH needed.

Finance & CryptoPayments & trading

Responded72 ms13 / 22
BotOrNot

Is a trading bot legit? Sourced bot fact sheets, regulator scam records and on-chain results.

Finance & CryptoPayments & trading

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
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
FirmFax prop firm data

Independent rule and fee data on 71 prop trading firms, every figure with its evidence state.

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

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