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.

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4673 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
ShopAIReady

AI-shopping feed checks (RO). Google→ChatGPT: link→url, image_link→image_url, in_stock, seller_name.

Finance & CryptoAI / LLM tooling

Responded72 ms14 / 22
Frontera Signal

Rio Grande Valley, Texas construction data: free catalog, samples and series; paid calls via x402

Finance & CryptoPayments & trading

Responded72 ms14 / 22
The Durability Curve

Essays, claim ledgers, weekly calls and laws, plus AI model release dates, prices and free plans.

Finance & CryptoAI / LLM tooling

Responded72 ms14 / 22
io.github.f-tiger/agiscorecard-web3-reconcile

Reconcile declared stablecoin invoices and transfers; flag partial, pending and mismatched payments.

Finance & CryptoPayments & trading

Responded72 ms14 / 22
dev.workers.3labsio.kingofthehill/king-of-the-hill

x402 game: take the crown, each take raises the next price 1.5x. hill_status is free.

Finance & CryptoPayments & trading

Responded73 ms14 / 22
Sellsy MCP by usefulapi

Search and read Sellsy companies, contacts, opportunities, invoices and tasks; create records.

Finance & CryptoPayments & trading

Responded73 ms14 / 22
K-Data — Korean Sell-Side Research & Market Data

Korean equity research, analyst revisions, kimchi premium and news via x402.

Finance & CryptoData access / search

Outdated check73 ms14 / 22
SweetValueLab

Free valuation models for S&P 500 and Nasdaq-100 stocks, Treasury yields and market sentiment.

Finance & CryptoPayments & trading

Responded74 ms14 / 22
Capital Markets Agents: MCP+A2A

KYP Agentic Trading: listed-issuer records served in-country, and AIO-10060 orderability outcomes.

Finance & CryptoPayments & trading

Outdated check74 ms14 / 22
RightCard

Which of your credit cards to use at any store, from verified bank data. No bank login.

Finance & CryptoPayments & trading

Responded75 ms14 / 22
com.blackwalltier/blackwall-x402-guardrail

Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.

Finance & CryptoPayments & trading

Responded75 ms14 / 22
com.bitcoincreditstack/mcp

The Bitcoin credit markets, measured. Cross-venue rates, venue criteria, chain indicators.

Finance & CryptoPayments & trading

Responded75 ms14 / 22
Lowcart delivered prices

Cheapest delivered price for any product: tech, home, shoes, beauty. Read from each store's checkout

Finance & CryptoPayments & trading

Responded76 ms14 / 22
DripMetrics

Institutional-grade market microstructure, a cent at a time. x402: Base USDC or Robinhood USDG.

Finance & CryptoPayments & trading

Responded76 ms14 / 22
Invoice & Payment ID Validator

Pay/review/hold verdict for invoice payees: cross-checks IBAN, BIC, VAT, EIN. Paid: RapidAPI

Finance & CryptoPayments & trading

Outdated check76 ms14 / 22
InvoiceGen

Freelancer invoices with totals, tax, due dates. Free.

Finance & CryptoPayments & trading

Outdated check76 ms14 / 22
KzCalc

Kazakhstan 2026 salary, tax and benefit estimates with source links and limitations.

Finance & CryptoPayments & trading

Responded79 ms14 / 22
com.day1work/day1work

Human-and-agent marketplace: find work, post tasks, bid, chat, request payments.

Finance & CryptoPayments & trading

Responded79 ms14 / 22
io.github.bluestratus/agenticfeed

Match shopper intent to a merchant's products and fetch live price, stock and product Q&A.

Finance & CryptoCode & DevOps

Responded81 ms14 / 22
agent-audit + page-read (x402)

Pay-per-call page reader, quote check, link check and x402 seller audit. USDC on Base via x402.

Finance & CryptoPayments & trading

Outdated check81 ms14 / 22
Tamer Prompt Marketplace

Prompt marketplace for AI agents: browse and buy prompts with x402 (USDC on Base).

Finance & CryptoPayments & trading

Outdated check82 ms14 / 22
FURRINGLINE

Thai building materials: product search, prices before VAT, stock and material calculators.

Finance & CryptoData access / search

Outdated check83 ms14 / 22
Economy Intel MCP

Macro data for AI agents: GDP, inflation, unemployment and more (World Bank, US BLS). No keys.

Finance & CryptoPayments & trading

Responded84 ms14 / 22
BotSharper

Test & simulate Solana trading bots on real pump.fun data; flag serial creators & launch teams.

Finance & CryptoPayments & trading

Responded84 ms14 / 22

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