MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

3337 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
Keptvow

Check a seller's wallet before your agent pays it: ok, careful or stop. Free, no key.

Finance & CryptoPayments & trading

Responded2531 ms13 / 22
Octodamus Intelligence Oracle

AI oracle: BTC/ETH/SOL signals, Polymarket edges, congressional trades. x402 $0.01/call on Base.

Developer ToolsCode & DevOps

Outdated check2778 ms13 / 22
Solana Wallet Tracker & Alerts

Solana wallet tracker & alerts: real-time activity webhooks, balances, tx history. Free.

Finance & CryptoPayments & trading

Responded3060 ms13 / 22
XBOSS

Korean national tax and social insurance filings, invoices and payroll data as MCP tools.

Finance & CryptoPayments & trading

Responded3297 ms13 / 22
Wever Pay Exchange

48-tool Base mainnet USDC exchange. Pay the listed price from your own wallet with x402.

Finance & CryptoPayments & trading

Responded3755 ms13 / 22
WingmanProtocol Agent Gateway

Durable memory, headless browser and research for agents. Pay per call: x402 USDC on Base or credits

Finance & CryptoPayments & trading

Outdated check6493 ms13 / 22
app.higgsfield.mizan-bazar/mizan

Check an x402 endpoint before your agent pays it: avoid / caution / ok, proven on-chain.

Finance & CryptoPayments & trading

Responded7471 ms13 / 22
McpStamp Recurring Invoices

Repeating invoice schedules per client: what falls due, the due invoices as PDFs, revenue ahead.

Finance & CryptoPayments & trading

Responded46 ms13 / 22
GL1TCH Token Safety

Token rug-risk scans, Know Your Agent wallet checks and deployer reputation for AI agents.

Finance & CryptoPayments & trading

Outdated check115 ms13 / 22
fi.northpoint/marketing-compliance

Crypto marketing compliance: MiCA, FCA, GDPR, SEC, MAS, VARA rules with citations. Not legal advice.

LegalKnowledge & memory

Responded211 ms13 / 22
dev.cz-agents/payqr

European payment QR — SPAYD (CZ/SK) & EPC/GiroCode (SEPA), plus text/WiFi/vCard. Local, free.

Finance & CryptoPayments & trading

Responded300 ms13 / 22
webcap

Screenshot, extract or audit any URL. Paid per call in USDC over x402; free tools need no wallet.

Finance & CryptoPayments & trading

Outdated check320 ms13 / 22
dev.charliemorrison/agent-web-reader

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

Finance & CryptoPayments & trading

Responded464 ms13 / 22
SAID Protocol

Check a Solana wallet before you pay it, a token before you buy it. Agent identity and reputation.

Finance & CryptoPayments & trading

Responded530 ms13 / 22
dev.rendraputra/100pro-token-risk

Read-only risk tools: token screen, contract source, wallet. $0.10 USDC on Base.

Finance & CryptoPayments & trading

Responded955 ms13 / 22
dev.x402check/mcp

Preflight before paying any x402 tool (ok|caution|avoid + history). 1 free/wallet; then $0.01 Base.

Finance & CryptoPayments & trading

Responded60 ms13 / 22
AI HUNTERZ — Autonomous Crypto Intelligence

49 crypto intelligence APIs. Whale tracking, DeFi yields, alpha signals. Pay in USDC on Base.

Finance & CryptoCode & DevOps

Responded68 ms13 / 22
NullClear Arbiter

Autonomous x402 payment schema-escrow arbiter, spend firewall, failover & ERC-8004 Sybil oracle

Finance & CryptoPayments & trading

Outdated check68 ms13 / 22
Content Intelligence API

9 MCP tools: extract, analyze, research, compare, monitor, brief. Pay-per-call x402 or subscribe.

Developer ToolsCode & DevOps

Responded69 ms13 / 22
SafeSwapGlobal Crypto Swap Quotes

Real-time non-custodial crypto swap estimates and on-chain routing across 240+ pairs.

Finance & CryptoCode & DevOps

Outdated check72 ms13 / 22
io.github.builtforai/part-d-cap

Medicare Part D out-of-pocket cap: when you hit it, and what the payment plan changes

Finance & CryptoPayments & trading

Responded83 ms13 / 22
bot-check: Bitcoin Self-Custody & WorkSats MCP

Verify Bitcoin PSBTs, addresses, and descriptors; earn or spend WorkSats bearer credits.

Finance & CryptoPayments & trading

Responded88 ms13 / 22
Gemini Crypto

Gemini Exchange MCP (public endpoints).

Finance & CryptoCode & DevOps

Outdated check93 ms13 / 22
Agent Lead Generation

Leads from agents: hops attributed with a per-hop utm_id from discovery to trial to invoice.

Marketing & SalesPayments & trading

Outdated check99 ms13 / 22

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