{"uid":"cap_P3A0rjdo3Jnu6Vylgd-kx","slug":"onchain-risk-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-f367ee01","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://onchain-risk.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://onchain-risk.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_SYCTu5V3MrFxNJd9WCr8_","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"onchain-risk.agentdiet.dev","brandSlug":"onchain-risk-agentdiet-dev-mpp","brandBaseUrl":"https://onchain-risk.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 checks.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — look at its MX, SPF, and DMARC records, and flag it if it's from a disposable or burner provider?","exampleUseCases":[{"title":"Screening leads before outreach","prompt":"Before I send my cold email sequence, check if sarah.jones@techstartup.io is a legitimate deliverable address — not a disposable inbox — and confirm its domain has MX and SPF records set up properly."},{"title":"Blocking throwaway signups","prompt":"A new user just signed up with temp-mail-99@guerrillamail.com — can you verify whether this is a disposable or burner email address so I can decide whether to block the registration?"},{"title":"Auditing email domain DNS health","prompt":"I need to know if the domain for support@bigcorpinc.com has its MX, SPF, and DMARC records correctly configured — can you run a full deliverability check on that address?"}],"resultDescription":"Returns a structured object indicating whether the email passes syntax validation, whether the domain is a known disposable/burner provider, whether it is a role account (e.g. admin@, info@), and live DNS lookup results for MX, SPF, and DMARC records — giving a complete deliverability risk profile for the address.","failureModes":["Missing or malformed email parameter returns a validation error","DNS lookup timeouts for domains with slow or unresponsive name servers","Unknown or newly registered domains may return empty MX/SPF/DMARC records even if legitimate","Rate limiting or payment failure (HTTP 402) if USDC micropayment is not completed","Disposable provider database may not include very newly created burner services"],"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-time DNS record inspection (MX, SPF, DMARC) in a single call — especially in agent workflows that require micropayment-native (x402/USDC) APIs or need MCP-compatible tooling.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:02.911Z","isFirstParty":false,"canonicalSlug":"onchain-risk-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-fcf933df"}