{"uid":"cap_AYe9vhpRO8wyl6Yh9ge7r","slug":"mcp-compiler-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-080451d9","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/spf-dmarc-auditor)","url":"https://mcp-compiler.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_kTM793p2OLI61peII3FjH","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 checks.","exampleAgentPrompt":"Can you check whether john.doe@acmecorp.com is a real, deliverable email — verify the syntax, confirm the domain has working MX records, and flag it if it's a disposable or role account?","exampleUseCases":[{"title":"Lead list email hygiene","prompt":"Before we upload this lead list to our CRM, check if sarah.johnson@prospectco.io is a valid deliverable email, not a burner or throwaway address, and that the domain actually has MX records set up."},{"title":"Signup fraud prevention","prompt":"A user just signed up with the email temp9283@mailinator.com — can you verify whether it's a disposable or burner provider so we can decide whether to block the registration?"},{"title":"Cold outreach domain audit","prompt":"I'm about to send a cold outreach campaign to contacts at bigclient.com — can you verify that their domain has valid MX, SPF, and DMARC records so my emails won't bounce or get flagged as spam?"}],"resultDescription":"Returns a structured object indicating whether the email passes syntax checks, whether the domain belongs to a known disposable/burner provider, whether the local part is a role account (e.g. info@, support@), and the live DNS status of MX records (mail server reachability), SPF records (sender policy), and DMARC records (domain-based message authentication policy).","failureModes":["Invalid or malformed email string returns a syntax error flag","Domain with no MX records returns undeliverable status","DNS lookup timeout for obscure or newly registered domains may return inconclusive results","Disposable provider lists may not cover every burner service","Payment failure (HTTP 402) if USDC micropayment is not processed correctly"],"whenToPreferThis":"Choose this endpoint when you need a real-time, multi-signal email validity check that goes beyond simple regex — especially when you want to simultaneously confirm DNS deliverability (MX), sender authentication setup (SPF/DMARC), and filter out disposable or role-based addresses in a single call. Ideal for lead enrichment pipelines, signup validation, and cold outreach pre-screening.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:44:46.902Z","isFirstParty":false,"canonicalSlug":"mcp-compiler-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b017fde1"}