{"uid":"cap_zBO3rt3yTXoydzOxzwy06","slug":"atk-email-authentication-security-checker-70ef08b0","name":"ATK Email Authentication Security Checker","description":"Grade a domain's email authentication A-F: SPF (lookup count, all-qualifier, duplicates), DMARC policy and reporting, MTA-STS mode, BIMI. Use before sending campaigns or to assess spoofing risk of a vendor's domain.","url":"https://atkvn.com/agent/v1/email-auth?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","description":"e.g. example.com"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"todo":["No MTA-STS ..."],"dmarc":{"policy":"quarantine"},"grade":"B","domain":"example.com"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_R-U8gbLCv47E4uyILBNlO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes a domain's email authentication configuration (DMARC, MTA-STS, SPF, etc.) and returns a security grade with actionable remediation items","exampleAgentPrompt":"Can you run an email authentication audit on example.com and tell me what security grade it gets and what I need to fix?","exampleUseCases":[{"title":"Pre-send domain security check","prompt":"Before we launch our email campaign, can you check the email authentication grade for our domain mybrand.com and tell me if there's anything urgent we need to fix?"},{"title":"Vendor email security due diligence","prompt":"I'm about to sign a contract with a supplier using supplier.io — can you check their email authentication setup and let me know if their DMARC policy is solid or if there are gaps?"},{"title":"Security posture monitoring for owned domains","prompt":"Can you audit the email security configuration for acmecorp.com and give me a full breakdown of what's missing — DMARC, MTA-STS, anything else that's flagged?"}],"resultDescription":"A JSON object containing a letter security grade (e.g. 'B'), the domain analyzed, the DMARC policy in effect, and a 'todo' array listing specific remediation recommendations such as missing MTA-STS configuration or policy weaknesses.","failureModes":["Domain does not exist or has no DNS records — may return empty or error response","Domain parameter missing from query — schema validation failure","DNS lookup timeout for domains with slow resolvers","Domains with no DMARC record may return minimal results","Rate limiting or payment failure for high-volume usage"],"whenToPreferThis":"Use this endpoint when you need a quick, structured email security assessment for any domain — especially when you want a graded report with explicit remediation steps. Prefer this over raw DNS lookups when you need a human-readable grade and consolidated view of DMARC, MTA-STS, and SPF posture in one call. Ideal for due diligence, compliance audits, or pre-deployment verification of email infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T00:31:32.786Z","isFirstParty":false,"canonicalSlug":"atk-email-authentication-security-checker-70ef08b0"}