{"uid":"cap_t6BqAvUvkkaw3yybp76Zx","slug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-80c311a5","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://defi-yield.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://defi-yield.agentdiet.dev/v1/mx-deliverability-verifier?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_HEIN97I6hSUZ_HcaUvsM4","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"defi-yield.agentdiet.dev","brandSlug":"defi-yield-agentdiet-dev-mpp","brandBaseUrl":"https://defi-yield.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider detection, role account flags, and live DNS MX/SPF/DMARC record checks to assess deliverability.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether it passes syntax checks, isn't a disposable or burner address, and has valid MX, SPF, and DMARC DNS records set up?","exampleUseCases":[{"title":"Pre-send bounce prevention for outreach","prompt":"Before we send our cold outreach campaign, check whether contact@prospectcorp.io is a real deliverable address — does it have working MX records and is it flagged as disposable or a role account?"},{"title":"Signup fraud detection for new users","prompt":"A user just signed up with the email temp123@mailinator.com — can you check if that's a disposable or burner email address so I can decide whether to block the registration?"},{"title":"CRM data quality audit","prompt":"I need to verify noreply@bigcompany.com before adding it to our CRM — is it a role account, does the domain have valid SPF and DMARC records, and is it actually deliverable?"}],"resultDescription":"Returns a structured JSON object indicating email syntax validity, whether the domain uses a known disposable/burner email provider, whether the address is a role account (e.g. admin@, support@), and the live DNS lookup results for MX, SPF, and DMARC records — giving an overall deliverability assessment.","failureModes":["Missing or malformed email parameter returns a 400 validation error","DNS lookup timeout if the domain's nameservers are unresponsive","Unknown or very new domains may lack MX/SPF/DMARC records, flagged as undeliverable","Payment not authorized results in HTTP 402 response requiring x402 USDC payment","Rate limiting or service unavailability returns 5xx errors"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, live email deliverability check that combines syntax validation, disposable-provider detection, role-account flagging, and real DNS record inspection (MX/SPF/DMARC) in a single call. Prefer it over basic regex-only validators when you need live DNS verification, or over domain-only tools when you need per-address disposable and role detection.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:23.616Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-2981faaf"}