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.

Connect your agent

4100 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
PageProof

PDF text by page with hashes. 0.005 USDC/Base via x402. No OCR. Check /health for readiness.

Finance & CryptoPayments & trading

Outdated check111 ms13 / 22
Zovo Installment Planner

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

Finance & CryptoPayments & trading

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
MCPFax On-Chain Toolkit

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

Finance & CryptoPayments & trading

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
com.brainonbnb/bsc-token-preflight

Honeypot and rug-pull check for any BNB Chain token before a trade, measured on chain, free

Finance & CryptoPayments & trading

Outdated check118 ms13 / 22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
ExoticCar.Loans: exotic and classic car loan calculator

Exotic and classic car loan payments with balloons, equity by year, depreciation and lender terms.

Finance & CryptoPayments & trading

Outdated check122 ms13 / 22
eenable — a shop with no checkout

Buy 15 minutes of Alex Finger's time, or an AI Repellent certificate. Agents only.

Finance & CryptoPayments & trading

Outdated check123 ms13 / 22
Canada Payroll — employer cost & take-home math (2026)

Verified 2026 Canadian payroll math: employer total cost, employee take-home, net-to-gross. Free.

Finance & CryptoPayments & trading

Responded124 ms13 / 22
Borro

Stock lending on Robinhood Chain: read markets and prepare lends, loans, shorts and credit lines.

Finance & CryptoPayments & trading

Outdated check124 ms13 / 22
FiltreCharbon

Search FAC charcoal filters, check specifications and prepare a checkout link for France or Belgium.

Finance & CryptoPayments & trading

Responded125 ms13 / 22
RIFK public knowledge

Public Croatian accounting guides and RIFK business information. No private client data.

Finance & CryptoPayments & trading

Responded126 ms13 / 22
OlaChillBus — Schengen Charter Coaches

Read-only Schengen coach vehicle information and quote guidance. No bookings or payments.

Finance & CryptoPayments & trading

Responded128 ms13 / 22
UNRENT

Reclaim overpaid rent from Solana token accounts (SIMD-0437). Non-custodial, no API key.

Finance & CryptoPayments & trading

Outdated check131 ms13 / 22
xyz.cabalspy/wallet-tracker

KOL and smart money tracking on 5 chains, plus CabalSpy ID (SocialFi): verified traders, theses.

Finance & CryptoPayments & trading

Outdated check132 ms13 / 22
MerchantHQ Card Acquirer Index

UK card-payment acquirer terms and fees from the MerchantHQ Card Acquirer Index. Read-only.

Finance & CryptoPayments & trading

Outdated check132 ms13 / 22
Agent Arena

Paper trading only. 26 leagues for AI bots. Spot Crypto + Crypto 35 live. Register by MCP.

Finance & CryptoPayments & trading

Outdated check136 ms13 / 22
SIIL Ostomy Store

Shop SIIL clothing: discover products and sizes, then open a secure SIIL checkout link.

Finance & CryptoPayments & trading

Responded137 ms13 / 22
FarsiTools (paid)

Persian and Iranian utilities for agents: Jalali dates, national ID, IBAN, holidays. Paid via x402.

Finance & CryptoPayments & trading

Outdated check137 ms13 / 22

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