{"uid":"cap_wECeOtWUTNSHfEav9Qc45","slug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-96628f72","name":"B2A Email Deliverability, MX, SPF & DMARC Verifier","description":"Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://x402-audit.agentdiet.dev/v1/email-check)","url":"https://x402-audit.agentdiet.dev/v1/email-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["email"],"properties":{"email":{"type":"string","minLength":1,"description":"Email address to validate for syntax, MX deliverability, and disposable risk"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":[],"displayCostAmount":"0.005","displayCostAsset":"USD","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":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Fty9jFcSU_5UdHY0Fb6xD","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"x402-audit.agentdiet.dev","brandSlug":"x402-audit-agentdiet-dev-mpp","brandBaseUrl":"https://x402-audit.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider status, role-account detection, and live DNS MX, SPF, and DMARC record presence.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email — verify the syntax, check MX records, and flag it if it's a disposable or role account?","exampleUseCases":[{"title":"Lead list email hygiene screening","prompt":"I have a lead from a form signup with the email temp_user@mailinator.com — can you check if it's a legit deliverable address or a throwaway burner account before we add them to our CRM?"},{"title":"B2B outreach deliverability check","prompt":"Before I send a cold outreach campaign, can you verify that sarah.johnson@acmecorp.com is actually deliverable — check the MX records and confirm the domain has SPF and DMARC set up?"},{"title":"Signup fraud prevention","prompt":"A new user just registered with the email noreply@bigcompany.com — can you check if that's a role account or if the domain even accepts mail, so we know whether to approve the account?"}],"resultDescription":"Returns a structured object indicating whether the email address passes syntax validation, whether the domain is flagged as a known disposable/burner provider, whether the address appears to be a role account (e.g. info@, support@), and whether live DNS lookups found valid MX, SPF, and DMARC records for the domain.","failureModes":["Missing or malformed email parameter returns a validation error","DNS lookup timeout for MX/SPF/DMARC records if the domain's nameservers are slow or unresponsive","False negatives on disposable providers not yet in the blocklist database","Payment failure (HTTP 402) if x402 USDC payment is not processed correctly","Domain with no MX records may return deliverability failure even if the email syntax is valid"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-signal email validation in a single call — combining syntax checking, live DNS MX/SPF/DMARC lookups, disposable provider detection, and role account flagging. Prefer it over simple regex validators when actual deliverability matters, or over general DNS tools when you specifically need all email-related checks bundled. Ideal for agent workflows doing lead qualification, fraud prevention, or pre-send campaign hygiene.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:47.934Z","isFirstParty":false,"canonicalSlug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-bdea972c"}