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Every server on the official MCP Registry, refreshed hourly. Official servers come first, then the most used. Showing servers you can install or connect to.
Public holidays and business-day math (T+N, counts) for many countries; pay per call via x402
Public records, email-auth DNS and OSV package vuln checks for agents: SEC, FDA, trials. x402 USDC
Crypto scam checks (tokens, sites, wallets), chain reads, web page to Markdown, email checks.
$0.01/call via x402: OFAC wallet screen, DNS, email auth, domain age, email verify, URL unshorten.
Email address checks, URL uptime pings and web page to markdown for agents, pay per call
Send a test email, get SPF, DKIM, DMARC, TLS and IPv6 results plus sender rules. No key.
Disposable test mailboxes on a real domain: send, receive and assert on real email.
Verify email deliverability by SMTP. Catch-all/disposable/role detection. EU-hosted, GDPR-ready.