{"uid":"cap_LD35KvwSIuUgr9QcZSAvh","slug":"mailcheck-dx-hugen-tokyo-70c372ad","name":"mailcheck-dx MX DNS Validator","description":"Performs MX DNS lookups and validates domain mail server configuration, including basic SMTP reachability and MX record checks.","url":"https://mailcheck-dx.hugen.tokyo/mx","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":"unknown","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_Y2_D1j7Dv86hk2jLqKfBK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs MX DNS lookups and validates domain mail server configuration, including basic SMTP reachability and MX record checks.","exampleAgentPrompt":"Can you check whether the domain gmail.com has valid MX records and a reachable mail server — I want to confirm it can actually receive email before I send to addresses there.","exampleUseCases":null,"resultDescription":"Returns MX record details for the queried domain along with SMTP reachability status, indicating whether the domain's mail server infrastructure is properly configured and capable of receiving email.","failureModes":["Domain does not exist or has no MX records — returns empty or error result","DNS lookup timeout if the domain's nameservers are unresponsive","SMTP reachability check blocked by firewall or rate-limiting on the mail server","Invalid domain format in request body — returns validation error","Payment failure via x402 protocol — request rejected before processing"],"whenToPreferThis":"Use this endpoint when you need to verify that a domain's mail infrastructure is properly set up at the DNS level before sending email, or when validating email addresses where domain-level deliverability (MX records + SMTP reachability) is the primary concern rather than full address-level validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:34:12.893Z","isFirstParty":false}