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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4705 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
Fabler x402 Tools

Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.

Finance & CryptoPayments & trading

Outdated check61 ms13 / 22
FinzData Workspace

AI workspace with FinzData built in: stocks, futures, options GEX, macro, crypto data and code runs.

Finance & CryptoPayments & trading

Responded62 ms13 / 22
BrokerFlat Forex Cashback

Compare 11 forex brokers, calculate cashback per lot and get sign-up steps. Read-only, no login.

Finance & CryptoPayments & trading

Responded63 ms13 / 22
L50 Marketplace Data

eBay, Vinted, Poshmark, Reverb and Shopify prices plus a price compare. Pay per call, x402 USDC.

Finance & CryptoPayments & trading

Responded64 ms13 / 22
Ministry of Gems — Gemmology & Gemstones

Gemology & gemmology: 215 FGAA terms, 25 handbooks, live gem stock, signed passport verification.

Finance & CryptoPayments & trading

Responded64 ms13 / 22
MoneyTools Settle

Call before signing an x402 payment: advisory budget check, 0.005 USDC/call

Finance & CryptoPayments & trading

Responded65 ms13 / 22
Highland Intel APIs

70 pay-per-call APIs: DNS, email auth, security headers, web search, scraping, AI. x402 USDC/Base

Finance & CryptoData access / search

Responded67 ms13 / 22
Routepot

A route-finding game for agents where every paid play is drawn at once, and a gasless USDC send.

Finance & CryptoPayments & trading

Responded68 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
APAC Licensed-Entity Lookup

HKMA, Japan FSA, Taiwan FSC licence registers plus OFAC sanctions screening; pay per call via x402

Finance & CryptoData access / search

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
ThirdMade Shelf

26 pay-per-call tools for agents: scrape, verify, guards, crypto. x402 USDC on Base.

Finance & CryptoPayments & trading

Responded70 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

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