{"uid":"cap_m6hOAEjrHH5ONlHGko37a","slug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-a9b5260f","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/mx-deliverability-verifier)","url":"https://x402-audit.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyz","method":"POST","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_kPV0jxxwiITWHNzYaly_o","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 detection, role account flags, and live DNS MX, SPF, and DMARC record checks.","exampleAgentPrompt":"Can you verify whether john.doe@example.com is a real, deliverable email address — check if the domain has valid MX records, whether it's a disposable/burner provider, and if SPF and DMARC are properly configured?","exampleUseCases":[{"title":"Pre-send mailing list hygiene","prompt":"Before we send this campaign, check whether newsletter-signup@tempmail.io is a real deliverable address or a throwaway — I need to know if it has MX records and whether it's a disposable provider."},{"title":"Fraud detection on new signups","prompt":"A user just signed up with admin@guerrillamail.com — can you tell me if that's a role account or a burner email, and whether the domain even has valid MX and DMARC records?"},{"title":"B2B lead email verification","prompt":"I've got a lead from someone at partnerships@bigcorp.net — can you verify that email is syntactically valid, that the domain has working MX records, and that SPF and DMARC are set up properly before we reach out?"}],"resultDescription":"Returns a structured object including email syntax validity, whether the address belongs to a known disposable/burner provider, whether it is a role-based account (e.g. info@, noreply@), and live DNS lookup results for MX, SPF, and DMARC records, giving a full deliverability picture for the queried email address.","failureModes":["Invalid or malformed email input returns a syntax error response","DNS lookup timeout if the email domain's nameservers are unresponsive","Unknown or non-existent domain returns no MX/SPF/DMARC records found","Payment required (HTTP 402) if x402 micropayment header is missing or invalid","Rate limiting if the same email is queried too many times in a short window"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email health check that covers syntax, DNS deliverability (MX), authentication policy (SPF/DMARC), disposable provider detection, and role account flagging simultaneously. It is ideal for fraud prevention pipelines, pre-send list hygiene, and B2B lead qualification workflows where a live DNS check (not just a static blocklist) is required. Prefer it over simple regex-only validators when real-time DNS record verification is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:30:46.556Z","isFirstParty":false,"canonicalSlug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-bdea972c"}