{"uid":"cap_1nXfHhA6j10r3CVPJMytH","slug":"quant-agent-shop-email-authentication-check-b3a9ace9","name":"Quant Agent Shop Email Authentication Check","description":"Email authentication check for a domain. Returns the SPF record with its DNS lookup count and all qualifier, the DMARC policy and report addresses, MX hosts, MTA-STS and BIMI records, DKIM keys found on common selectors, a grade from A to F and a list of issues. Use to diagnose deliverability or spoofing risk. DKIM is checked on common selectors only. Typical response under 1 s. Failed calls are not charged.","url":"https://quantagentshop.com/v1/email-auth-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","title":"Domain","maxLength":300,"minLength":1,"description":"Domain name, such as example.com."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0013","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":"$0.0013/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0013","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0013","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nr3vp9IiHcYAdFztJdjcL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0013","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks a domain's email authentication setup, returning SPF, DMARC, DKIM, MX, MTA-STS, and BIMI records along with a deliverability grade and list of issues.","exampleAgentPrompt":"Can you check the email authentication setup for example.com — I want to see its SPF, DMARC, DKIM, and MX records, along with an overall deliverability grade and any issues I should fix?","exampleUseCases":[{"title":"Pre-send deliverability audit","prompt":"Before we launch our email campaign, can you check email authentication for acme.com and tell me if there are any SPF, DMARC, or DKIM issues that might cause our emails to land in spam?"},{"title":"Spoofing risk assessment for vendor","prompt":"I need to know if we're at risk of someone spoofing emails from ourvendor.com — can you pull its email auth records, check DMARC policy, and give me an overall security grade?"},{"title":"Troubleshooting rejected outbound mail","prompt":"Our emails from startup.io keep getting rejected or flagged. Can you run a full email authentication check on startup.io and list all the problems with the SPF, DKIM, and DMARC configuration?"}],"resultDescription":"Returns the domain's SPF record (with DNS lookup count and all qualifiers), DMARC policy and reporting addresses, MX hosts, MTA-STS record, BIMI record, DKIM keys found on common selectors, an overall deliverability grade from A to F, and a structured list of issues or misconfigurations.","failureModes":["Invalid or non-existent domain returns an error","Private or localhost domain names rejected","DNS timeout or resolution failure may return partial results","DKIM check limited to common selectors only — custom selectors may be missed","Network errors on the provider side return a non-charged failure response"],"whenToPreferThis":"Use this endpoint when you need a comprehensive, single-call email authentication audit for a domain, covering SPF, DMARC, DKIM, MX, MTA-STS, and BIMI together with a graded summary and actionable issue list. Prefer it over manual DNS lookups or separate per-record tools when you want a fast, structured deliverability or spoofing-risk assessment without assembling multiple API calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T12:44:43.568Z","isFirstParty":false,"canonicalSlug":"quant-agent-shop-email-authentication-check-b3a9ace9"}