{"uid":"cap_VTzSPdZjE7_6eBgSXcjnN","slug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-0c8b11cc","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-check)","url":"https://defi-yield.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_TYaiN67x7NQkSRzA7txbn","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 status, role-account detection, and live DNS MX, SPF, and DMARC record presence.","exampleAgentPrompt":"Can you check whether john.smith@acmecorp.com is a real, deliverable email — specifically whether it passes syntax checks, isn't a disposable or burner address, and whether the domain has valid MX, SPF, and DMARC records set up?","exampleUseCases":[{"title":"Pre-send campaign email scrubbing","prompt":"Before I send this marketing email blast, check if sarah.jones@globaltech.io is a legitimate deliverable address — I need to know if it's disposable, has working MX records, and whether the domain has SPF and DMARC configured."},{"title":"New user signup fraud screening","prompt":"A user just signed up with the email temp-user@mailnull.com — can you tell me if that's a throwaway or burner address and whether it's actually capable of receiving email?"},{"title":"B2B lead domain DNS health check","prompt":"I have a sales lead at contact@prospectco.com — verify whether that email is real and deliverable, and check if their domain has proper MX, SPF, and DMARC records in place."}],"resultDescription":"Returns a structured object indicating: email syntax validity, whether the provider is a known disposable/burner service, whether the address is a role account (e.g. admin@, info@), and live DNS lookup results for MX records (mail server presence), SPF records (sender policy), and DMARC records (domain-based message authentication) for the email's domain.","failureModes":["Invalid or malformed email input returns a syntax error or validation failure","DNS lookup timeout if the email domain's DNS is unreachable or slow","Unknown domain with no DNS records returns MX/SPF/DMARC as absent","Rate limiting or payment failure (HTTP 402) if USDC micropayment is not satisfied","Empty or missing email parameter returns a 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email health check that combines syntax validation, disposable/burner detection, role-account flagging, and live DNS MX/SPF/DMARC verification — especially in B2B lead enrichment, user onboarding fraud prevention, or pre-send email list hygiene workflows where deliverability confidence is critical.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:26.528Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-2981faaf"}