{"uid":"cap_p4N7natVi4IkXii-2kxXz","slug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-a337299f","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://mcp-security.agentdiet.dev/v1/spf-dmarc-auditor)","url":"https://mcp-security.agentdiet.dev/v1/spf-dmarc-auditor?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_xJH0agHAAap404YViUzHv","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-security.agentdiet.dev","brandSlug":"mcp-security-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-security.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider detection, role-account identification, and live DNS MX, SPF, and DMARC record checks.","exampleAgentPrompt":"Can you check whether support@acmecorp.com is a real, deliverable address — including whether its domain has valid MX records, SPF, and DMARC set up, and whether it looks like a disposable or role-based account?","exampleUseCases":[{"title":"SaaS signup fraud prevention","prompt":"Before we activate this new user account, can you verify that the email they signed up with — freemailer99@mailnull.com — is real and not a disposable or burner address?"},{"title":"B2B lead list email hygiene","prompt":"I have a lead I'm about to cold-email: cto@startupxyz.io — can you check if that address is actually deliverable and whether the domain has MX, SPF, and DMARC records properly configured?"},{"title":"Deliverability audit before email campaign","prompt":"We're about to send a campaign to a list of contacts and I want to verify one of the addresses first — can you do a full deliverability check on newsletter@bigclient.com, including DNS records and disposable/role account flags?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the domain uses a known disposable/burner provider, whether the address appears to be a role account (e.g. admin@, noreply@), and the live DNS MX records, SPF record presence/policy, and DMARC record presence/policy for the email's domain.","failureModes":["Invalid or malformed email address provided — returns syntax error","DNS lookup timeout for the domain's MX/SPF/DMARC records — may return partial results","Domain has no MX records (undeliverable domain) — reported as non-deliverable","Payment not completed (HTTP 402) — request blocked until x402 USDC payment is made","Empty email parameter — returns required field validation error"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email validation that covers syntax, disposable provider detection, role-account flagging, and live DNS MX/SPF/DMARC record verification. Prefer it over simple regex-based syntax checkers when deliverability and domain security posture both matter, or over standalone MX lookup tools when you also need disposable/role account intelligence in one response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:43:19.496Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-87cfc270"}