{"uid":"cap_5oidqvEL2pEoxuALJ99LX","slug":"prompt-guard-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-85dad1a9","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://prompt-guard.agentdiet.dev/v1/disposable-email)","url":"https://prompt-guard.agentdiet.dev/v1/disposable-email?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_pqKn2RME6R87tiMsDyil5","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"prompt-guard.agentdiet.dev","brandSlug":"prompt-guard-agentdiet-dev-mpp","brandBaseUrl":"https://prompt-guard.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX/SPF/DMARC record lookups to assess deliverability.","exampleAgentPrompt":"Can you check if john.doe@tempmail.com is a real, deliverable email address — specifically whether it's a disposable/burner provider, has valid MX records, and passes SPF and DMARC checks?","exampleUseCases":[{"title":"Screen sign-up for fake emails","prompt":"A user just registered with the email free-trial@guerrillamail.com — can you check if it's a disposable or burner address, and whether the domain has legit MX records before I activate their account?"},{"title":"Pre-send deliverability audit","prompt":"Before I send my newsletter campaign, can you verify that contact@acmecorp.io is actually deliverable — check if the domain has MX records set up and whether SPF and DMARC are configured properly?"},{"title":"Detect role account in lead list","prompt":"I have a sales lead who gave the email address info@bigcompany.com — can you tell me if that's a role-based address, whether it's disposable, and if the domain's mail DNS records look healthy?"}],"resultDescription":"Returns a structured object indicating whether the email passed syntax validation, whether the domain is a known disposable/burner provider, whether it is a role-based account (e.g. admin@, noreply@), and the live DNS lookup results for MX, SPF, and DMARC records for the email's domain.","failureModes":["Missing or empty email parameter returns an error","Malformed email string may return syntax invalid without DNS checks","Temporary DNS lookup failures may result in inconclusive MX/SPF/DMARC results","Rate limiting or payment failure (HTTP 402) if per-call USDC payment is not provided","Unknown or newly registered domains may lack SPF/DMARC records, returning absent status rather than an error"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email hygiene check combining syntax validation, disposable provider detection, role account identification, and live DNS MX/SPF/DMARC record verification in a single call. It is particularly useful for sign-up fraud prevention, sales lead qualification, and pre-campaign deliverability audits. Prefer it over simple regex validators when you need live DNS truth, and over domain-only tools when per-address disposable/role detection is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:46:06.738Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-f0765224"}