{"uid":"cap_PTF8bH9eJRR0EjkxlBOsp","slug":"toolcall-click-email-validate-4108f597","name":"toolcall.click Email Validate","description":"Email verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection (121k+ known domains), role-account and free-provider flags. JSON verdict with a bounce/deliverability risk level. Validate emails for signup fraud prevention, list hygiene and lead qualification. $0.004 USDC per call, pay via x402, no API key.","url":"https://toolcall.click/t/email/validate","method":"GET","headers":{},"bodySchema":{"type":"object","$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"],"type":"string"},"queryParams":{"type":"object","required":["email"],"properties":{"email":{"type":"string","description":"Email address to validate"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"risk":"high","role":false,"email":"user@example.com","hasMx":false,"reasons":["no_mx"],"disposable":false,"syntaxValid":true,"freeProvider":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9hj0r8I7aJwf9t6zUjwg3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks an email address for syntax validity, MX record existence, disposable-domain status, role-account and free-provider flags, and returns a deliverability risk verdict without sending any email.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — flag if it's disposable, a role account, or has no valid MX records?","exampleUseCases":null,"resultDescription":"A JSON object containing a deliverability verdict with a bounce/risk level, plus individual flags: syntax valid/invalid, MX record found/not found, whether the domain is in the 121k+ disposable-domain blocklist, whether it's a role account (e.g. info@, support@), and whether it belongs to a free email provider.","failureModes":["Missing 'email' query parameter returns an error response","Malformed email string may still pass syntax check depending on permissiveness","Unknown or newly created disposable domains may not yet appear in the blocklist","Private or unusual TLDs may cause MX lookup failures unrelated to deliverability","Network timeouts on DNS lookups could cause delayed or failed responses"],"whenToPreferThis":"Use this endpoint when you need a lightweight, no-send email validation that covers syntax, DNS/MX infrastructure, and social signals (disposable, role, free-provider) in a single call. Prefer it over full email ping/SMTP verification when you cannot send test messages, need instant results at signup, or want to avoid SMTP-based rate limits and blocklisting. Ideal for signup fraud prevention, list hygiene before campaigns, and lead qualification pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:34:25.913Z","isFirstParty":false}