{"uid":"cap_58teI9o0toLcAEkGh6A2x","slug":"signaldesk-ai-email-validate-2c8159c9","name":"SignalDesk AI Email Validate","description":"Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.","url":"https://x402-agent.kariguetoazul.workers.dev/api/network/email-validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"email":{"type":"string","maxLength":512,"description":"Email candidate."}}},"responseSchema":{"type":"json","example":{"valid_syntax":true,"mailbox_verified":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lRP3Msng03KgN1BvZGbE6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness and mailbox deliverability via a paid per-call API","exampleAgentPrompt":"Can you check if 'john.doe@example.com' is a valid, deliverable email address — verify both the syntax and whether the mailbox actually exists?","exampleUseCases":[{"title":"Pre-send email list cleanup","prompt":"Before I send out this campaign, check whether 'sarah.jones@acmecorp.com' is a real, deliverable email — I need to know if both the syntax is valid and the mailbox is live."},{"title":"Signup form email gating","prompt":"A user just signed up with the email 'fake_user@notadomain.xyz' — can you verify if that address is syntactically valid and the mailbox actually exists before I create their account?"},{"title":"CRM lead email hygiene","prompt":"I have a lead in my CRM with email 'bob.smith@gmail.com' — validate it for me so I know if it's properly formatted and the mailbox is reachable before I reach out."}],"resultDescription":"Returns a JSON object with two boolean fields: 'valid_syntax' (whether the email string is correctly formatted) and 'mailbox_verified' (whether the mailbox was confirmed to exist and accept mail). Example: {\"valid_syntax\": true, \"mailbox_verified\": false}.","failureModes":["Missing or empty email field returns a validation error","Email string exceeding 512 characters is rejected","Malformed JSON request body results in a 400-level error","Payment failure or insufficient USDC balance may result in 402 Payment Required","Mailbox verification may be inconclusive for some domains that block SMTP probing, returning false negatives","Rate limiting or quota exhaustion may return 429 or equivalent error"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, per-call email validation that covers both format syntax checking and live mailbox reachability verification at a very low cost ($0.001 USDC per call). Ideal for agents performing real-time lead validation, signup gating, or CRM hygiene where you need a fast boolean answer rather than a full deliverability audit. Prefer this over free regex-only checks when mailbox existence matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:42:04.492Z","isFirstParty":false,"canonicalSlug":"signaldesk-ai-email-validate-2c8159c9"}