{"uid":"cap_ajJKflF9aXHIr9ZPLjoer","slug":"serp-extract-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-0c4064af","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://serp-extract.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://serp-extract.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"},"limit":{"type":"integer","default":20,"maximum":100,"minimum":1,"description":"Maximum number of items to return per page (1-100)"},"cursor":{"type":"string","description":"Opaque pagination cursor for fetching the next page"}}},"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_ri9yW7zb34Mug5rWwWnqj","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"serp-extract.agentdiet.dev","brandSlug":"serp-extract-agentdiet-dev-mpp","brandBaseUrl":"https://serp-extract.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 checks.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether it has valid MX records, passes SPF and DMARC checks, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Screen signups for fake emails","prompt":"Someone just signed up with the email temp-user@mailnull.com — can you check if it's a disposable or burner address and whether it has real MX records before we let them into the platform?"},{"title":"Pre-send deliverability audit","prompt":"Before we send our newsletter campaign to support@acmecorp.io, can you verify that the domain has valid MX and DMARC records and that the email is actually deliverable?"},{"title":"CRM lead quality check","prompt":"We just imported a list of leads and I want to check whether sales@newprospect.biz is a legitimate business email — please verify its syntax, MX records, SPF, DMARC, and whether it's a role account."}],"resultDescription":"Returns a structured object indicating: email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), live DNS MX record presence and details, SPF record existence and content, and DMARC policy record — giving a holistic deliverability assessment.","failureModes":["Missing or malformed email parameter returns a validation error","DNS lookup timeouts may cause MX/SPF/DMARC checks to fail or return partial results","Newly registered domains may lack MX/SPF/DMARC records causing false negatives","Disposable provider database may not include all known throwaway services","Payment failure (HTTP 402) if USDC balance is insufficient for the $0.005 per-call fee"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email health check that combines syntax validation, live DNS MX/SPF/DMARC lookups, and disposable/role-account detection — especially in agent workflows requiring fraud screening, CRM enrichment, or pre-send deliverability audits. Prefer it over lightweight regex-only validators when real DNS verification matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:51:20.280Z","isFirstParty":false,"canonicalSlug":"serp-extract-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-18768445"}