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

4136 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
LeadFuzion Agent Store

US probate and pre-probate lead packages by county. No account; pay per package by card or USDC.

Finance & CryptoPayments & trading

Responded350 ms11 / 22
Academic Evidence Pack

Signed citation-integrity reports + retraction-checked evidence packs, paid per call via x402/USDC.

Finance & CryptoPayments & trading

Responded363 ms11 / 22
YouTube Video Summarizer (pay-per-call)

Summarize YouTube videos or fetch transcripts. Pay-per-call via x402 (USDC on Base), no account.

MediaPayments & trading

Responded373 ms11 / 22
Brandname Maker

Paid brand naming with real .com/.app/.ai checks. $0.25 stablecoin or $1 card per call (MPP).

Finance & CryptoPayments & trading

Responded407 ms11 / 22
US Company Intelligence for AI Agents (SEC EDGAR, x402)

SEC EDGAR company briefs for agents: cited synthesis, XBRL metrics. x402/USDC, no account.

Finance & CryptoPayments & trading

Responded431 ms11 / 22
io.github.michu5696/paycrow

Escrow protection for agent payments on Base — USDC held in smart contract until job completion.

Finance & CryptoPayments & trading

Responded433 ms11 / 22
Argo Hub Reposición de Stock

Calculate a SKU reorder point, stock coverage and replenishment quantity from your own assumptions.

Finance & CryptoPayments & trading

Responded433 ms11 / 22
AI 代理人任務中樞

台灣繁中:一個 MCP 端點串接 19 個台灣資料站工具,並可搜尋 MCP 伺服器與 x402 付費 API。

Finance & CryptoPayments & trading

Responded437 ms11 / 22
Scrooge Tool Mill

8 pay-per-call agent tools: company card $0.03, page meta $0.002. USDC on Base via x402.

Finance & CryptoPayments & trading

Responded448 ms11 / 22
AV Hub x402 Tools

Ten pay-per-call x402 tools for game planning and bounded data transforms on Base USDC.

Finance & CryptoPayments & trading

Responded476 ms11 / 22
Vino & Views

Free reports, EVM/Solana token payment links and capped zero-fee EVM USDC escrow. Wallet signatures.

Finance & CryptoPayments & trading

Responded480 ms11 / 22
io.github.ZlaylowZ/nukez-mcp

Agent-native storage with cryptographic verification on Solana. Keyless: clients sign and pay.

Finance & CryptoPayments & trading

Responded511 ms11 / 22
Tideline Money Tools

Free money calculators: option expiry risk, debt avalanche, cash runway, subscriptions, invoices.

Finance & CryptoPayments & trading

Responded523 ms11 / 22
Census County Business Patterns

Establishment counts, employment, and payroll by geography and NAICS code from Census CBP

Finance & CryptoPayments & trading

Responded531 ms11 / 22
FDIC BankFind

Bank financials, branch locations, deposit data, and failure history from FDIC

Finance & CryptoPayments & trading

Responded532 ms11 / 22
Agent Market

AI agents trade general work for test USDC on Base Sepolia, with escrow and signed evidence.

Finance & CryptoPayments & trading

Responded534 ms11 / 22
Angel Numbers Deterministic API

Deterministic angel number meanings via MCP, with x402 USDC paid interpretations on Base.

Finance & CryptoPayments & trading

Responded538 ms11 / 22
ai.tachyo/tachyo

Crypto market intelligence, token rug-checks, and wallet verification in one MCP server.

Finance & CryptoPayments & trading

Responded592 ms11 / 22
Invoice Preflight

Evidence-backed UBL, PDF, and image invoice checks before approval or payment.

Finance & CryptoPayments & trading

Responded596 ms11 / 22
FaultKey · CausalLayer

Deterministic AI-liability attribution: signed, Bitcoin-anchored vendor/deployer/user fault split.

Finance & CryptoPayments & trading

Outdated check610 ms11 / 22
io.github.CollectorGuru/newsgurus-intel

Pay-per-call trading intelligence for AI agents: live market regime, trading signals, composite conv

Finance & CryptoPayments & trading

Responded669 ms11 / 22
com.agenticpaywall/composer

Composes + runs multi-step external-data workflows for one quoted USDC price (x402).

Finance & CryptoPayments & trading

Responded697 ms11 / 22
io.github.justuncase1210-del/ai-agent-hub

Pay-per-call APIs for AI agents: queries, storage, ads. Billed in USDC via x402.

Finance & CryptoPayments & trading

Responded715 ms11 / 22
Echo Sentiment — XLM Market Sentiment

XLM (Stellar) market sentiment for agents — keyless, pay-per-call via x402 (USDC on Base).

Finance & CryptoPayments & trading

Responded724 ms11 / 22

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