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

4034 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
within · luxury boutiques

Live stock at independent luxury boutiques: sizes, prices, where to buy, what it costs delivered.

Finance & CryptoPayments & trading

Responded927 ms15 / 22
Ontario Protocol

Find live x402 APIs for any task (0.005 USDC, no match no charge); Base balance, tx and gas reads.

Finance & CryptoPayments & trading

Responded934 ms15 / 22
Kristo Intelligence

Pay-per-call DeFi intelligence for AI agents on Base — x402, USDC, no keys.

Finance & CryptoPayments & trading

Responded958 ms15 / 22
Agoranome seller tools

Get your x402 API found and bought: lint, Bazaar rank, buyer panel, demand gaps. Paid in USDC.

Finance & CryptoPayments & trading

Responded985 ms15 / 22
Gondola Award Travel Search

Compare cash vs points on hotels, flights, and cars. Checkout supported hotels and rental cars.

TravelPayments & trading

Responded1072 ms15 / 22
TaskRail

Delivered-price deals, cancel/refund paths, used-value comparisons, and compatibility checks.

OtherPayments & trading

Responded1094 ms15 / 22
Calculadoras laborales y tributarias PY/EC

Paraguay & Ecuador tax and labor calculators: IVA, severance, payroll, income tax, fines, RUC/CDC.

Finance & CryptoPayments & trading

Responded1156 ms15 / 22
VibeCart

Agent-native commerce with trusted catalog, durable carts, and Stripe Checkout via MCP and UCP.

Finance & CryptoPayments & trading

Responded1209 ms15 / 22
AllPaintingsStore Trade Art Catalog

Wholesale art for hotels and trade: search paintings, check stock, price any size at volume.

Finance & CryptoPayments & trading

Responded1212 ms15 / 22
Agent Utility Suite (x402)

SEC red-flag alerts & company dossiers, token risk, wallet checks, x402 preflight, scraping, OFAC.

Finance & CryptoPayments & trading

Responded1236 ms15 / 22
India API

Free Indian data and AI: pincode, IFSC, GSTIN, holidays, GST invoice, OCR, translation. No key.

Finance & CryptoPayments & trading

Responded1328 ms15 / 22
NakamotoNotes Bitcoin Barometer

Bitcoin Barometer: Heat Score, BTC price, ten indicators and daily history. Read-only.

Finance & CryptoPayments & trading

Responded1342 ms15 / 22
JPVerify

Japan company, T-number, invoice issuer and address checks for AI agents, paid per call via x402.

Finance & CryptoPayments & trading

Responded1357 ms15 / 22
SwapEazi

SwapEazi is the AI agent for managing cross-border payments.

Finance & CryptoPayments & trading

Responded1392 ms15 / 22
MIZAN · Proof before payment

Check before you pay. Prove to get paid. Signed answers on any agent, against your own bar.

Finance & CryptoPayments & trading

Responded1481 ms15 / 22
Agent Discovery Board by SarnAI

Free directory of MCP servers and x402 APIs for AI agents. Find them, or list your own in one call.

Finance & CryptoPayments & trading

Responded1536 ms15 / 22
QuantCalc Retirement Engine

Retirement Monte Carlo, tax-aware withdrawals, 2026 tax calculators, RMD, IRMAA, every-state tax.

Finance & CryptoPayments & trading

Responded1577 ms15 / 22
A2AWire

The agent economy: birth returns identity, inbox, wallets, jobs. Compete, get paid in USDC.

Finance & CryptoPayments & trading

Responded1612 ms15 / 22
Hungry eSIM

Travel eSIMs: unlimited data, pick your days, top up existing eSIMs, card checkout, no API key.

Finance & CryptoPayments & trading

Responded1677 ms15 / 22
EVM & Solana Chain Reads (Tanod)

Read EVM and Solana chains for balances, tokens, eth_call, logs, receipts, gas, blocks and ENS.

Finance & CryptoPayments & trading

Responded1726 ms15 / 22
x402 & MCP Server Index (Tanod)

x402 endpoint and MCP server index: find paid APIs for agents, x402 checks and price benchmarks.

Finance & CryptoPayments & trading

Responded1874 ms15 / 22
Macro & Commodities Desk

Kalshi macro: Fed rate odds, gold, silver, oil and bitcoin edges, 15-min markets, Kelly sizing.

Finance & CryptoPayments & trading

Responded1919 ms15 / 22
Crypto Markets Desk

Kalshi 15-minute crypto markets, perps funding, liquidation math and bitcoin model edges.

Finance & CryptoPayments & trading

Responded1993 ms15 / 22
Chord

Swap quotes + unsigned txs on 8 EVM chains, plus Solana data: boards, candles, wallet PnL. No key.

Finance & CryptoPayments & trading

Responded2105 ms15 / 22

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