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

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
x402card: Virtual Cards + Freeland eSIM

Issue and top up x402 virtual cards or buy Freeland travel eSIMs with Base USDC.

Finance & CryptoPayments & trading

Responded86 ms13 / 22
Verifi

Get a real human to verify, decide, or improve an AI agent's work. Pay per review via x402 on Base.

Finance & CryptoPayments & trading

Outdated check86 ms13 / 22
PennyQuery

Company enrichment + SEC EDGAR filings, financials, insider trades for agents; $0.01 USDC via x402

Finance & CryptoPayments & trading

Responded88 ms13 / 22
Agent Verification Utility

Deterministic JSON checks with signed evidence and x402-paid execution

Finance & CryptoPayments & trading

Responded88 ms13 / 22
GYOTAK Fish Market

Sashimi-grade flash-frozen fish from Thailand. Catalog, ordering, and on-chain traceability.

Finance & CryptoPayments & trading

Responded89 ms13 / 22
SCRIPTMASTERLABS — HIVE402

HIVE402 by ScriptMasterLabs: 132 paid x402 endpoints from $0.001/call, 10 MCP tools, no custody.

Finance & CryptoPayments & trading

Responded90 ms13 / 22
Ni Biashara Shelves — Africa FX, freight & compliance checks (x402)

Africa FX, US carrier/broker checks, OFAC name and wallet screens, load-vet pack. Paid via x402.

Finance & CryptoPayments & trading

Responded90 ms13 / 22
Safe or Scam

Crypto scam checks (tokens, sites, wallets), chain reads, web page to Markdown, email checks.

Finance & CryptoPayments & trading

Responded91 ms13 / 22
EconDash

Free, read-only economic indicators for any country from the World Bank, IMF, FRED, OECD and others

Finance & CryptoPayments & trading

Outdated check93 ms13 / 22
Colin Wynd (tarvit.com)

Colin Wynd's career, writing and talks on payments, settlement, digital assets and enterprise AI

Finance & CryptoPayments & trading

Responded94 ms13 / 22
PayperDecision

Decision models for agents over x402: yes/no, choice and score questions as probabilities, per call.

Finance & CryptoPayments & trading

Responded94 ms13 / 22
Bitcoin Power Law (btclaw.io)

Live Bitcoin power-law data: price vs trend, trend and bands on any date, when BTC reaches a price.

Finance & CryptoPayments & trading

Responded95 ms13 / 22
Eudigo – EUDI Wallet index

Independent EUDI Wallet index: status in all 27 EU states, deadlines, registers, standards, news.

Finance & CryptoPayments & trading

Responded95 ms13 / 22
io.github.tony8713/casa

Private, permanent encrypted storage for AI agents. Paid per call in USDC via x402.

Finance & CryptoPayments & trading

Responded95 ms13 / 22
Fiscalo MCP by usefulapi

Read and create customers, items and draft invoices in Fiscalo.

Finance & CryptoPayments & trading

Responded95 ms13 / 22
H/M Agent Surface - Free MCP Tools

Five free MCP tools, including proof-before-payment preview, plus one authorized x402 pack.

Finance & CryptoPayments & trading

Outdated check95 ms13 / 22
io.github.klever-io/mcp-klever-vm

MCP server for Klever blockchain smart contract development.

Finance & CryptoPayments & trading

Outdated check96 ms13 / 22
x402 Agent Tools

Pay-per-call web, Base onchain and crypto-alert tools for agents. USDC on Base via x402, no API key.

Finance & CryptoPayments & trading

Responded97 ms13 / 22
MEO Preflight

Read-only machine payment preflight using dated MEO evidence, with explicit unknowns.

Finance & CryptoPayments & trading

Responded98 ms13 / 22
com.brainonbnb/erc8004-agent-finder

Find and vet AI agents on BNB Chain by on-chain evidence: ERC-8004 registry, ERC-8183 escrow, free

Finance & CryptoPayments & trading

Outdated check98 ms13 / 22
Datoka Agent

Signed agent execution declarations. Free verification; issuance 0.002 USDC via x402 on Base.

Finance & CryptoPayments & trading

Responded99 ms13 / 22
WELANDA Engraving Designer

Design a laser engraving for a WELANDA snus case, preview it and hand the user a checkout link.

Finance & CryptoPayments & trading

Responded99 ms13 / 22
uk.co.hopi/hopi

Free UK calculators, converters and validators (tax, VAT, stamp duty, dates, units), read-only.

Finance & CryptoPayments & trading

Outdated check99 ms13 / 22
IranTools (paid)

Persian and Iranian utilities for agents plus text tooling. Paid via x402 or MPP.

Finance & CryptoPayments & trading

Outdated check100 ms13 / 22

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