{"uid":"cap_S_6I1vcmbQ7e6APVJPvIV","slug":"isin-validator-c35eb1d9","name":"ISIN Validator","description":"Deterministic ISIN check before routing an order or paying a market-data API: structure regex (2-letter country or XS/EU, 9-char NSIN, check digit) and the Luhn checksum over the base-36 expansion. Query: ?isin=US0378331005. Returns valid, country_code, nsin, check_digit and is_international. A corrupted ISIN means a rejected order or the wrong instrument. Pure offline computation, 1y cache.","url":"https://x402-datashop-production.up.railway.app/v1/validate/isin","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","required":["isin"],"properties":{"isin":{"type":"string","description":"ISIN to validate, 12 characters"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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_y_1qCZe397J0-bbPZ1xXx","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 an ISIN code by checking structure regex and Luhn checksum, returning parsed components and validity status","exampleAgentPrompt":"Can you check whether US0378331005 is a valid ISIN — I want to make sure the structure and check digit are correct before I route the order.","exampleUseCases":null,"resultDescription":"Returns a JSON object with: valid (boolean), country_code (2-letter ISO or XS/EU prefix), nsin (9-character national securities identifier), check_digit, and is_international (boolean indicating XS/EU prefix instruments).","failureModes":["ISIN shorter or longer than 12 characters returns invalid with structural error","Non-alphanumeric characters in ISIN cause regex failure and invalid result","Correct structure but wrong Luhn check digit returns valid=false","Missing isin query parameter returns 400 bad request","Malformed request returns error response"],"whenToPreferThis":"Choose this endpoint when you need a fast, purely deterministic, offline ISIN validation with no external dependency — ideal as a pre-flight check before routing orders or calling paid market-data APIs, where a bad ISIN would waste money or cause a rejected trade. Prefer over custom regex implementations because it also handles the Luhn base-36 checksum correctly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:52:50.699Z","isFirstParty":false}