{"uid":"cap_KeZbflvTTQSWwICSyAbrj","slug":"preplayer-ai-identifier-validator-f648df3c","name":"PrepLayer.ai Identifier Validator","description":"Validate and canonicalize one identifier: email, URL, E.164 phone, IBAN (mod-97), payment card (Luhn), UUID, SHA-256, git SHA, EVM address (EIP-55) or domain. Returns {valid, canonical, fingerprint}.","url":"https://api.maximusmediahouse.com/v1/validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"kind":{"enum":["email","url","phone_e164","iban","card_luhn","uuid","sha256","git_sha","evm_address","domain"],"type":"string","description":"Identifier type."},"value":{"type":"string","description":"The identifier to validate (max 512 chars)."}}},"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_7aBLF0NP_-EWQTRd4nK9o","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":"Validates and canonicalizes a single identifier (email, URL, phone, IBAN, payment card, UUID, SHA-256, git SHA, EVM address, or domain) and returns its validity, canonical form, and fingerprint.","exampleAgentPrompt":"Can you check whether this email address is valid and give me its canonical form: 'User.Name+tag@Example.COM'?","exampleUseCases":[{"title":"Email validation before outreach","prompt":"Before I import this list, check if 'john.doe+newsletter@Gmail.COM' is a valid email and what its canonical form is."},{"title":"Ethereum address checksum verification","prompt":"I have an EVM wallet address '0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae' — can you verify it passes the EIP-55 checksum and give me the properly cased canonical version?"},{"title":"IBAN validation for payment processing","prompt":"Validate this IBAN for me before we process the transfer: 'GB29 NWBK 6016 1331 9268 19' — is it valid and what's its canonical form?"}],"resultDescription":"Returns a JSON object with three fields: 'valid' (boolean indicating whether the identifier passes all format and checksum rules), 'canonical' (the normalized, standardized form of the identifier), and 'fingerprint' (a stable hash or fingerprint of the canonical value for caching and deduplication).","failureModes":["Invalid 'kind' enum value returns a 400 error","Value exceeds 512 character limit","Malformed JSON request body","Identifier structurally invalid but well-formed input still returns valid:false gracefully","x402 payment failure if USDC balance insufficient","Network timeout or 5xx on provider side"],"whenToPreferThis":"Choose this endpoint when you need fast, deterministic, rule-based validation with canonicalization — especially for identifiers like IBANs (mod-97), payment cards (Luhn), EVM addresses (EIP-55), or E.164 phones where checksum correctness matters. Prefer it over regex-only validators when you also need the canonical normalized form and a fingerprint for deduplication. It covers 10 distinct identifier types in a single, cheap API call at $0.002.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:32:53.885Z","isFirstParty":false,"canonicalSlug":"preplayer-ai-identifier-validator-f648df3c"}