MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

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DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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4708 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
CrawlWitness

AI consent & licensing check for any domain, with signed on-chain receipts. Paid via x402.

Finance & CryptoPayments & trading

Responded107 ms13 / 22
21btc.cc Bitcoin Data

Live Bitcoin price, ETF flows, treasuries, on-chain metrics, fees, derivatives & wiki search.

Finance & CryptoPayments & trading

Responded107 ms13 / 22
AgentScrape

Pay-per-call web scraping for AI agents via x402 on Base USDC. Six tools, no signup.

Finance & CryptoBrowser & web scraping

Outdated check107 ms13 / 22
Swatch Ledger

Fabric shrinkage from a swatch wash test, and how much fabric to buy before washing.

Finance & CryptoCode & DevOps

Responded108 ms13 / 22
Billwise Invoice Maker

An invoice generator for freelancers, contractors, and small businesses that works inside the chat.

Finance & CryptoPayments & trading

Responded109 ms13 / 22
LandedFX

All-in FX quotes and routes between 25 local currencies and stablecoins, after every fee.

Finance & CryptoPayments & trading

Responded109 ms13 / 22
cz.freelax/tax-engine

Deterministic Czech OSVC tax tools for 2026: tax, insurance, deadlines, VAT and exchange rates.

Finance & CryptoPayments & trading

Responded110 ms13 / 22
Coil Live

Trading discipline for AI agents: when to trade or sit in cash, on 650+ US stocks and ETFs

Finance & CryptoPayments & trading

Responded111 ms13 / 22
Zovo Bill Calendar

Make a bill payment calendar from your list of bills: a printable monthly bill calendar.

Finance & CryptoPayments & trading

Responded111 ms13 / 22
ecoExperten Energieausweis

Order official German energy certificates (Energieausweis) from chat — on invoice, 1-2 days.

Finance & CryptoPayments & trading

Responded111 ms13 / 22
Zovo Installment Planner

Split an amount into a payment plan schedule with exact installments.

Finance & CryptoPayments & trading

Responded113 ms13 / 22
openfang-rail

Deterministic banking, LEI, VAT, SWIFT & compliance checks via MCP with signed XDR-1 receipts.

Finance & CryptoCode & DevOps

Responded113 ms13 / 22
Ryufin

Free US stock research from SEC filings: five plain answers on 3,000+ stocks. No API key.

Finance & CryptoPayments & trading

Responded114 ms13 / 22
Digital in Asia

Asia's digital economy: AI, gaming, ecommerce, payments. Articles, trackers, reports, glossary.

Finance & CryptoPayments & trading

Responded115 ms13 / 22
holdmark · facts about online stores

Does this store deliver and refund? Measured with carriers and payment processors.

Finance & CryptoPayments & trading

Responded116 ms13 / 22
TaxCompass — Italian tax tools

Sourced Italian tax tools for AI agents: cited primary-source search + a deterministic tax engine.

Finance & CryptoData access / search

Responded116 ms13 / 22
agentsvc.io

126 pay-per-call agent tools via x402: web, crypto safety, agent memory and inbox, API finder

Finance & CryptoCommunication & messaging

Responded116 ms13 / 22
MCPFax On-Chain Toolkit

The on-chain facts you need in the seconds before you transact.

Finance & CryptoPayments & trading

Responded117 ms13 / 22
SpinHire iGaming Jobs

Live iGaming jobs — casino, betting, studios, affiliates — plus market data. No auth.

Finance & CryptoData access / search

Responded117 ms13 / 22
Simple Easy Transactions agent checks

Agent payment readiness and AI visibility checks, $1 per call over MPP or prepaid credits.

Finance & CryptoPayments & trading

Responded118 ms13 / 22
AllPDFMagic

PDF tools + invoice extraction, bank statement parsing, GST reconciliation & GSTIN validation.

Finance & CryptoPayments & trading

Responded119 ms13 / 22
Zovo AR Aging Report

Make an accounts receivable aging report from your open invoices and see who owes you money.

Finance & CryptoPayments & trading

Responded120 ms13 / 22
Congress Trade Alerts

Congressional stock-trade disclosures (House + Senate PTRs) with each filing's lateness vs 45 days

Finance & CryptoPayments & trading

Responded120 ms13 / 22
YourAITools MCP Hub

All 22 YourAITools agent APIs in one MCP server. Most tools free; pay with credits or x402.

Finance & CryptoPayments & trading

Responded120 ms13 / 22

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