{"uid":"cap_mHGPFBiabvx5zf1o3BIZ6","slug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-16e537da","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-check)","url":"https://x402-audit.agentdiet.dev/v1/mx-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_xe6YPL_MD4DCfz3EH1n6a","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 if john.doe@acmecorp.com is a real, deliverable email — verify the syntax, look up its MX records, and flag it if it's from a disposable or burner provider?","exampleUseCases":[{"title":"CRM lead quality gate","prompt":"Before we import this list of new leads, check if jane.smith@tempmail.org is a valid, non-disposable email with working MX records so we don't waste sends on fake signups."},{"title":"Signup fraud prevention","prompt":"A user just registered with the email no-reply@guerrillamail.com — can you check whether it's a role account or disposable burner address before we let them through?"},{"title":"B2B outreach deliverability audit","prompt":"I'm about to cold-email contact@startupxyz.io — can you verify the domain has proper MX, SPF, and DMARC records set up so my message won't bounce or land in spam?"}],"resultDescription":"Returns a structured object indicating whether the email address passes syntax validation, whether the domain is associated with a disposable or burner provider, whether it is a role-based address (e.g. info@, support@), and the live DNS status of MX, SPF, and DMARC records for the domain.","failureModes":["Invalid or malformed email input returns a syntax error","DNS lookup timeout if the domain's nameservers are unresponsive","Domain does not exist — MX lookup returns NXDOMAIN","Missing required 'email' query parameter returns a 400 error","Payment failure via x402 protocol if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need a single, real-time call that combines email syntax checking, disposable/burner detection, role-account flagging, and live DNS MX/SPF/DMARC record lookup in one response — especially in agent workflows that require fraud prevention, lead quality gating, or pre-send deliverability checks without maintaining your own DNS resolver infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:30.317Z","isFirstParty":false,"canonicalSlug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-bdea972c"}