{"uid":"cap_YNUW_Q4hYODRLNNeV0ydk","slug":"lookproof-idn-validator-452697f2","name":"Lookproof IDN Validator","description":"Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.","url":"https://api.lookproof.dev/v1/dns/idn?utm_source=zero.xyz","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","title":"IdnInput","required":["name"],"properties":{"name":{"type":"string","title":"Name","maxLength":1024,"minLength":1}},"description":"A name in Unicode or ASCII form; whether it is valid IDNA is the check's answer.","additionalProperties":false}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_cmzeViRt6W8MURRkZ9SHd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Convert a domain name between Unicode and punycode (ACE/A-label) and validate it against IDNA2008, UTS 46, bidi, context, hyphen, and mixed-script homograph rules per label","exampleAgentPrompt":"Can you validate 'bücher.example.com' against IDNA2008 and UTS 46 rules, convert it to its punycode form, and flag any homograph risks or disallowed characters per label?","exampleUseCases":[{"title":"Pre-registration IDN safety check","prompt":"Before I register 'кофе.com', can you validate it against IDNA2008 and UTS 46, convert it to punycode, and tell me if any labels have mixed-script homograph risks or disallowed characters?"},{"title":"Homograph phishing domain detection","prompt":"I received a suspicious link using the domain 'pаypal.com' — can you check it for mixed-script or homograph issues and show me what the punycode version looks like?"},{"title":"Display name normalization for DNS UI","prompt":"I need to display 'münchen.de' correctly in our domain management dashboard — can you convert it to its A-label punycode form and confirm it passes IDNA2008 and bidi validation?"}],"resultDescription":"A per-label breakdown of the domain name including: its Unicode and punycode (ACE/A-label) representations, IDNA2008 and UTS 46 compliance status, any disallowed characters, bidi rule violations, context rule failures, hyphen placement errors, label length issues, and mixed-script homograph risk flags. All checks are performed offline without any DNS queries.","failureModes":["Empty or missing 'name' parameter returns a 422 validation error","Domain name exceeding 1024 characters is rejected","Malformed input that cannot be parsed as a domain label may return an error response","Endpoint only validates structure and encoding — it does not check if the domain is actually registered or resolvable"],"whenToPreferThis":"Use this endpoint when you need to validate, convert, or compare internationalized domain names (IDNs) before registration, display, or comparison — especially when homograph phishing risk, IDNA2008 compliance, or punycode conversion accuracy matters. Prefer this over general DNS lookup tools when you need offline, standards-based structural validation of Unicode and ACE labels with per-label detail. It is ideal for domain registrar workflows, security scanning pipelines, and any UI that must safely display or store IDN hostnames.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:33.544Z","isFirstParty":false,"canonicalSlug":"lookproof-idn-validator-452697f2"}