{"uid":"cap_HcTX-gAIgBOPYlAm4IPcR","slug":"halowerk-domain-intel-mx-mail-policy-lookup-73891c96","name":"Halowerk Domain Intel — MX Mail Policy Lookup","description":"Domain in, WHOIS, DNS, mail policy, TLS certificate and subdomains out. Pay per call in USDC over x402. No signup, no API key.","url":"https://dns.halowerk.com/domain/articles/mx-mail-ru?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","maxLength":253},"baseline":{"type":"object","required":["domain","observed_at","records"],"properties":{"domain":{"type":"string","maxLength":253},"records":{"type":"array","items":{"type":"object","required":["exchange","priority"],"properties":{"exchange":{"type":"string","maxLength":254},"priority":{"type":"integer","maximum":65535,"minimum":0}},"additionalProperties":false},"maxItems":50},"observed_at":{"type":"string","maxLength":40}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.009","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":"$0.009/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RnRmKo9aARE1nT6oGQ2JK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches MX record and mail policy intelligence for a given domain, optionally comparing against a baseline, via pay-per-call USDC micropayment over x402.","exampleAgentPrompt":"Pull the MX records and mail policy for protonmail.com and tell me if there have been any changes compared to these baseline MX records: [{\"exchange\":\"mail.protonmail.ch\",\"priority\":10}], observed on 2024-01-15.","exampleUseCases":[{"title":"Mail server change detection","prompt":"Check the current MX records for sendgrid.com and compare them against this baseline I recorded last month — exchange: smtp.sendgrid.net at priority 10, observed 2024-03-01 — and tell me if anything has changed."},{"title":"Email deliverability audit","prompt":"Look up the full mail policy and MX configuration for my domain acmecorp.io so I can verify our email infrastructure is set up correctly before our product launch."},{"title":"Competitive domain reconnaissance","prompt":"What mail servers and mail policy does competitor.com use? I want to know their MX records and any SPF or DMARC configuration they have in place."}],"resultDescription":"Returns MX record details (mail exchange hostnames and priorities) along with broader domain intelligence including WHOIS data, DNS records, mail policy (SPF, DKIM, DMARC), TLS certificate information, and discovered subdomains for the queried domain.","failureModes":["Invalid or malformed domain name returns a validation error","Non-existent domain returns empty or error result","Payment failure over x402 results in 402 response and no data returned","Baseline schema mismatch returns a validation error","DNS lookup timeout for unresponsive domains may result in partial data"],"whenToPreferThis":"Choose this endpoint when you need comprehensive mail policy and MX record data for a domain without wanting to manage API keys or subscriptions — ideal for pay-as-you-go agent workflows, one-off domain audits, or monitoring pipelines that need WHOIS, DNS, TLS, and mail intelligence in a single call. Prefer this over self-hosted DNS lookup tools when you want structured, enriched output including subdomains and certificate data alongside MX records.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:44:56.509Z","isFirstParty":false,"canonicalSlug":"halowerk-domain-intel-mx-mail-policy-lookup-73891c96"}