{"uid":"cap_LrPte4p0Wr7IkFFO0Xhhd","slug":"alpha-stream-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-9d1f8e14","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://alpha-stream.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://alpha-stream.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyz","method":"POST","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_GTs9Yn4qjwVIrh7gN8Sb8","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"alpha-stream.agentdiet.dev","brandSlug":"alpha-stream-agentdiet-dev-mpp","brandBaseUrl":"https://alpha-stream.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 health.","exampleAgentPrompt":"Can you verify whether john.doe@example.com is a real, deliverable email — check its MX records, whether it's from a disposable provider, and whether the domain has proper SPF and DMARC records?","exampleUseCases":[{"title":"Lead list email hygiene check","prompt":"Before we import these sales leads, can you check if sarah.jones@startupco.io is actually deliverable — verify the MX records, SPF, DMARC, and flag it if it looks like a burner or role account?"},{"title":"Signup fraud detection","prompt":"A user just signed up with the email temp1234@mailinator.com — is that a disposable or burner address? Check if it has valid MX records and whether we should block it."},{"title":"Email domain health audit","prompt":"We're about to send a cold outreach campaign and I want to make sure the recipient domain is set up correctly — can you validate info@acmecorp.com for MX, SPF, and DMARC records before we reach out?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the domain is from a known disposable/burner provider, whether it is a role account (e.g. admin@, support@), and live DNS lookup results for MX records (mail server existence), SPF record presence and content, and DMARC policy — giving a comprehensive deliverability picture.","failureModes":["Invalid or malformed email string returns a syntax error response","Domain does not exist in DNS — MX lookup returns empty or NXDOMAIN","Temporary DNS resolution failures may cause intermittent lookup errors","SPF or DMARC records absent — indicated in response flags rather than as an error","Rate limiting or payment failure (HTTP 402) if USDC micropayment is not processed correctly"],"whenToPreferThis":"Choose this endpoint when you need a single comprehensive check covering syntax, deliverability, disposable detection, role-account flagging, and DNS authentication records (MX, SPF, DMARC) in one call. It is particularly well-suited for AI agent workflows that need to qualify leads, validate signups, or audit outbound email domains before sending — especially in pipelines that support x402 USDC micropayment. Prefer it over basic syntax-only validators when DNS-level deliverability truth matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:30:52.354Z","isFirstParty":false,"canonicalSlug":"alpha-stream-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-73a4bb6a"}