{"uid":"cap_hzs6rwuSsZyBjNt6eF0M3","slug":"json-repair-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-d7a8b569","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://json-repair.agentdiet.dev/v1/mx-check)","url":"https://json-repair.agentdiet.dev/v1/mx-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_x3UNyBpZh0jcxvmj2frdB","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"json-repair.agentdiet.dev","brandSlug":"json-repair-agentdiet-dev-mpp","brandBaseUrl":"https://json-repair.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner domain status, role account detection, and live DNS MX/SPF/DMARC record presence.","exampleAgentPrompt":"Can you check whether john.doe@acmecorp.com is a real, deliverable email address — specifically whether it has valid MX records and isn't from a disposable or burner provider, and whether SPF and DMARC are configured?","exampleUseCases":[{"title":"CRM lead quality gate","prompt":"Before I add this lead to our CRM, can you verify that sarah.jones@techstartup.io is actually deliverable — check the MX records, see if it's a throwaway address, and confirm SPF and DMARC are set up on that domain?"},{"title":"Sign-up form fraud screening","prompt":"A new user just registered with the email temp123@mailinator.com — can you check if that's a disposable or burner address so I know whether to flag the account?"},{"title":"Cold outreach deliverability audit","prompt":"I'm about to send a cold email to ceo@bigclient.com — can you verify the domain has valid MX records, is not a role or catch-all account, and has SPF and DMARC configured so my message won't bounce or go to spam?"}],"resultDescription":"Returns a structured object indicating: email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), live DNS MX record presence and values, SPF record existence and content, and DMARC record existence and policy — giving a holistic deliverability verdict.","failureModes":["Missing or invalid email parameter returns a 400-level error","DNS lookup timeout for obscure or newly registered domains may cause incomplete results","Disposable provider database may not cover very new or niche throwaway services","Domains with aggressive anti-scraping DNS may return false negatives for MX checks","Payment not completed via x402 results in a 402 response before validation occurs"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple syntax checking — specifically when you need live DNS MX/SPF/DMARC lookups combined with disposable domain detection and role account flagging in a single call. Prefer it for agent workflows involving lead qualification, fraud prevention, or pre-send deliverability checks where false positives from burner addresses are costly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:43:19.494Z","isFirstParty":false,"canonicalSlug":"json-repair-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-be2e6dc4"}