{"name":"onyx_email_validate","tier":"metered","price_usdc":"0.002","endpoint":"https://onyx-actions.onrender.com/v1/onyx_email_validate","method":"POST","input_schema":{"type":"object","properties":{"email":{"type":"string","description":"Address to validate"}},"required":["email"]},"description":"Validate an email address: RFC-5322 syntax check, domain DNS resolution (does the domain exist?), and disposable-provider detection (Mailinator, 10minutemail, GuerrillaMail, etc.). Returns a single confidence verdict plus the underlying signals so agents can decide whether to send. Use before mailing list signups, password-reset flows, or sales-lead capture to filter out trash addresses cheaply. ~30-80ms typical.","when_to_use":null,"vs_alternatives":null,"example_request":null,"example_response":null,"settle_to":"0x3fD9ee1373562f894D322B37DFFAd7a5D2b2d78f","network":"base","facilitator":"https://facilitator.xpay.sh","payment_required":true,"free_introspection":true,"note":"GET this URL = free introspection card. POST with x402 payment header to call."}