{"uid":"cap_6PtQikUCkKVGFvRXgRmnR","slug":"email-syntax-and-mx-domain-validator-c3ccd478","name":"Email Syntax and MX Domain Validator","description":"","url":"https://api.x-402.online/v1/email/validate","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"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":"down","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_Ufx8vpF4kV_zvQNnluQ6v","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":"Validates an email address by checking its syntax and verifying the domain has valid MX DNS records, without sending any email.","exampleAgentPrompt":"Can you check if the email address john.doe@example.com is valid — both the format and whether the domain can actually receive mail — without sending anything to it?","exampleUseCases":null,"resultDescription":"Returns a validation result indicating whether the email address passes syntax checks and whether the domain has valid MX DNS records, without dispatching any email.","failureModes":["Malformed or missing email query parameter returns an error","Domain exists but has no MX records — flagged as invalid for mail delivery","Temporary DNS lookup failure may cause false negatives","Extremely unusual but syntactically valid email formats may be misclassified"],"whenToPreferThis":"Use this endpoint when you need lightweight, passive email validation — checking both format and deliverability signals (MX records) without triggering any email send or requiring the user to click a link. Ideal for form validation, lead qualification, or pre-send list scrubbing where speed and privacy matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:26:06.688Z","isFirstParty":false}