{"uid":"cap_8-lL2YeUaHccEuE9gxppI","slug":"onchain-risk-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-8830e95d","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/email-check)","url":"https://onchain-risk.agentdiet.dev/v1/email-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_U-RvYGaT_S-vNh22b1pqY","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, and DMARC record existence.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether it passes syntax checks, has live MX records, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Screening sign-up emails for fraud","prompt":"Before we activate this new user account, check if the email they signed up with — temp_user_9821@mailinator.com — is a disposable or burner address and whether its domain has working MX records."},{"title":"CRM lead quality gate","prompt":"We just got a new sales lead with the email contact@acmecorp.io — can you verify it's syntactically valid, not a role account, and that the domain has SPF and DMARC records set up before we add it to the CRM?"},{"title":"Email campaign deliverability audit","prompt":"I'm about to send a newsletter to newsletter@bigcompany.com — can you confirm this email will actually be deliverable by checking its MX records and whether the domain has DMARC configured?"}],"resultDescription":"Returns a structured JSON object indicating: email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. admin@, noreply@), and the live DNS lookup results for MX, SPF, and DMARC records for the email's domain.","failureModes":["Invalid or missing email parameter — returns error indicating required field","DNS lookup timeout for MX/SPF/DMARC records — may return partial results or timeout error","Domain does not exist — MX/SPF/DMARC fields will indicate absence","Payment not fulfilled (HTTP 402) — request blocked until x402 micropayment is completed","Malformed email string that passes initial parse but fails DNS stage"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, live email validation that goes beyond syntax checking — specifically when you need real-time DNS MX/SPF/DMARC verification combined with disposable-provider and role-account detection in a single call. It is ideal for agent workflows requiring fraud prevention at sign-up, lead quality scoring, or pre-send deliverability checks. Prefer it over simple regex validators when DNS truth matters, and over full email-sending tests when you need a read-only, low-cost check.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:51:22.755Z","isFirstParty":false,"canonicalSlug":"onchain-risk-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-fcf933df"}