{"slug":"quantagentshop-com-v1-email-auth-check-848b94","title":"Email authentication check for a domain","host":"quantagentshop.com","method":"POST","resource":"https://quantagentshop.com/v1/email-auth-check","category":"other","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 spo","price_listed":0.0013,"price_asked":0.0013,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":251,"reported_calls_30d":2,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"domain":"example.org"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"domain":{"description":"Domain name, such as example.com.","maxLength":300,"minLength":1,"title":"Domain","type":"string"}},"required":["domain"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.0013,"price_match":true,"latency_ms":251,"error":null}],"description_full":"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.","last_updated":"2026-10-22T17:54:38.985Z","schemes":["exact"]}