{"uid":"cap_lCsbzo6QoraJxE4waxh3V","slug":"mcp-compiler-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b645fe5a","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-compiler.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://mcp-compiler.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"}}},"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_FQu2jyUdqTPnPXtbPNfuK","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-compiler.agentdiet.dev","brandSlug":"mcp-compiler-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-compiler.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 lookup.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real deliverable email address — specifically whether it passes syntax checks, isn't a disposable provider, and has valid MX, SPF, and DMARC DNS records set up?","exampleUseCases":[{"title":"Signup form disposable email screening","prompt":"Before I create an account for this user, check if the email they provided — tempuser99@mailinator.com — is a disposable or burner address and whether the domain actually has working mail servers."},{"title":"Pre-send campaign email validation","prompt":"I'm about to send a marketing email to leads@prospects.io — can you verify the email syntax is correct and that the domain has proper MX records, SPF, and DMARC configured so my message won't bounce?"},{"title":"CRM data quality audit","prompt":"I want to make sure support@acmecorp.com is a real deliverable address before adding it to our CRM — check if it's a role account, whether the domain's MX records are live, and if SPF and DMARC are set up properly."}],"resultDescription":"Returns a structured object indicating: whether the email syntax is valid, whether the domain uses a known disposable/burner email provider, whether the address is a role account (e.g. info@, admin@), and live DNS lookup results for MX records, SPF TXT record, and DMARC policy record — giving an overall deliverability assessment.","failureModes":["Missing or malformed email parameter returns a validation error","Non-existent domain results in MX lookup failure with appropriate flag","DNS timeout causes incomplete record results for SPF or DMARC","Newly registered domains may lack SPF/DMARC records, flagged as missing","Rate limiting or payment failure (402) if credit is insufficient"],"whenToPreferThis":"Choose this endpoint when you need a combined, single-call check covering email syntax, disposable provider detection, role account flagging, AND live DNS MX/SPF/DMARC verification in one response. It is ideal for agent workflows that need to gate on email quality before outreach, signup, or CRM ingestion, especially when a comprehensive DNS-layer check (not just syntax) is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:47.535Z","isFirstParty":false,"canonicalSlug":"mcp-compiler-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b017fde1"}