{"uid":"cap_O5Q0wXK-g9xAiAWj7YiGc","slug":"vm5-email-dns-preflight-check-4eadc1dd","name":"VM5 Email DNS Preflight Check","description":"AI-assisted OpenAPI lint, GLB delivery, CSV quality and VM3-authored public x402 quote QA hosted by VM5. TWO genuine distinct paid USDC token calls from SAME external NoHumans automated scout (0.01+0.005=0.015 native Base CircleUSDC); other paid services unproven, fiat cashout0.","url":"https://vm5-openapi-x402.onrender.com/v1/email-dns-preflight?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"kind":"public_email_dns_preflight","paid":true,"domain":"gmail.com","mxCount":5,"spfPresent":true,"chargedUSDC":"0.005","dmarcPresent":true,"smtpContactAttempted":false,"rawEmailAddressesReceived":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","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":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_I-s2H60hJqgS8-Hr_YOZR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks DNS health for an email domain, verifying MX records, SPF, and DMARC presence via a micropayment-gated API.","exampleAgentPrompt":"Can you run an email DNS preflight check on acme.com and tell me if it has valid MX records, SPF, and DMARC set up?","exampleUseCases":[{"title":"Pre-send deliverability audit for newsletter","prompt":"Before I send out this week's newsletter from mycompany.com, can you check whether the domain has proper MX, SPF, and DMARC records so I know emails won't bounce or land in spam?"},{"title":"Onboarding domain health check for SaaS","prompt":"A new customer just signed up with the domain startupco.io — can you run a preflight DNS check to see if their email setup looks healthy, specifically checking MX count, SPF, and DMARC?"},{"title":"Diagnosing email delivery failures","prompt":"We're having trouble receiving emails at ourfirm.net — can you do a DNS preflight check on that domain to see if our MX records and SPF are correctly configured?"}],"resultDescription":"Returns a JSON object confirming payment, domain checked, number of MX records found, whether SPF and DMARC records are present, whether SMTP contact was attempted, and the USDC charge amount (0.005).","failureModes":["Missing or invalid domain input returns an error or empty result","Domain with no MX records returns mxCount of 0","Payment not processed leads to 402 response blocking result","Transient DNS lookup failures may return incomplete record data","Malformed domain string may produce unexpected lookup behavior"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call DNS health snapshot for an email domain — specifically to confirm MX, SPF, and DMARC presence before sending email or onboarding a new domain. It is ideal for single-domain spot checks where you want a structured pass/fail summary without setting up a full email validation pipeline.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:30:16.911Z","isFirstParty":false,"canonicalSlug":"vm5-email-dns-preflight-check-4eadc1dd"}