{"uid":"cap_gyjaxr7fpp1d3lPsTdGyw","slug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-2c709e30","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/mx-deliverability-verifier)","url":"https://mcp-security.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_qKe5-65Wlp2hI1QShVW-L","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 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 — specifically whether it passes syntax checks, isn't a throwaway burner account, and has valid MX, SPF, and DMARC DNS records set up?","exampleUseCases":[{"title":"Pre-send campaign email validation","prompt":"Before we send out this marketing email blast, check whether sarah.jones@clientdomain.com is actually deliverable — does the domain have proper MX records, is it a disposable address, and does it pass SPF and DMARC checks?"},{"title":"CRM lead quality screening","prompt":"I just got a new lead who signed up with the email temp123@mailinator.com — can you verify if this is a burner or disposable email, and whether it would actually receive mail?"},{"title":"B2B outreach domain health check","prompt":"We're about to cold-email the contact at ceo@newpartner.io — can you verify that address is syntactically valid, not a role account, and that their domain has MX and DMARC records configured correctly?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the domain uses a disposable/burner email provider, whether the address is a role account (e.g. info@, admin@), live MX record lookup results, SPF record presence and validity, and DMARC policy status — providing a comprehensive deliverability and trustworthiness assessment for the given email address.","failureModes":["Invalid or missing email parameter returns a 400 error","DNS lookup timeouts for unresponsive domains may result in incomplete MX/SPF/DMARC data","Newly registered domains may lack SPF/DMARC records, returning absent rather than invalid","Payment failure (HTTP 402) if USDC payment is not completed","Rate limiting or quota exhaustion may return 429 errors","Malformed email strings that pass basic syntax but fail deeper checks may yield partial results"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, all-in-one email deliverability check that combines syntax validation, disposable provider detection, role account flagging, and live DNS record (MX/SPF/DMARC) verification in a single call. It is particularly well-suited for AI agent workflows that need to qualify email addresses before outreach, CRM ingestion, or user registration — especially when you want to avoid sending to spam traps, burner emails, or misconfigured domains without making separate DNS or reputation API calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T06:44:02.138Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-87cfc270"}