{"uid":"cap_DAxZBYG1OJCyCXZoIQmaf","slug":"x402-tollbooth-email-verifier-f8327617","name":"x402-tollbooth Email Verifier","description":"Check whether email addresses are real and safe to send to. Verifies up to 25 addresses per call: syntax, domain MX/A record (including null-MX), disposable-domain, role-account, free-provider and typo checks. Does not perform SMTP/mailbox verification.","url":"https://x402-tollbooth.onrender.com/api/verify?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"emails":{"type":"array","items":{"type":"string"},"description":"Array of email address strings, max 25 per call."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OKUH_18FfJ5HEcU0L-9vK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates up to 25 email addresses per call by checking syntax, domain MX/A records, disposable-domain status, and role-account flags — without SMTP mailbox probing.","exampleAgentPrompt":"Can you check whether these email addresses are valid and flag any that are disposable or role-based: alice@example.com, info@tempmail.org, support@acme.io?","exampleUseCases":[{"title":"Pre-send campaign list cleanup","prompt":"Before I send out this marketing email, can you validate these 20 subscriber addresses and tell me which ones have bad domains, are disposable, or are role accounts like info@ or noreply@?"},{"title":"New user signup fraud detection","prompt":"We just got a batch of signups — can you check these email addresses for disposable domains and role-account patterns so we can flag suspicious registrations before they activate their accounts?"},{"title":"CRM import quality check","prompt":"I'm about to import a CSV of 18 leads into our CRM. Can you verify that each email has valid syntax and a working domain with MX records, and flag any that look like throwaway addresses?"}],"resultDescription":"Returns per-address validation results covering: syntax check pass/fail, domain MX record presence, domain A record presence, whether the domain is a known disposable/temporary email provider, and whether the address is a role account (e.g. admin@, info@, support@). Does not confirm whether a specific mailbox exists on the server.","failureModes":["More than 25 emails submitted in a single call — batch exceeds the per-call limit","Malformed JSON body or missing 'emails' array field — returns 400-level error","Payment not attached or insufficient — x402 payment required error","Domain DNS lookup timeout — may result in inconclusive MX/A record status","Service cold-start latency on Render free tier — initial request may be slow"],"whenToPreferThis":"Choose this endpoint when you need fast, lightweight bulk email validation (syntax + domain-level checks) without triggering SMTP connections or risking blacklisting. Ideal for pre-send list hygiene, fraud detection at signup, and CRM import validation where mailbox-level SMTP probing is unnecessary or prohibited. Best for batches up to 25 addresses per call at very low cost per check.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T06:37:53.668Z","isFirstParty":false,"canonicalSlug":"x402-tollbooth-email-verifier-f8327617"}