{"uid":"cap_JfiqDLpGCg13SF4vM3GEV","slug":"isin-validator-b14a6fc4","name":"ISIN Validator","description":"Validate a securities ISIN (ISO 6166): format, check digit, issuing country and embedded CUSIP (US/CA, with its own check) or SEDOL (GB/IE). Computed locally; nothing stored.","url":"https://api.vextorium.com/v1/isin-validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"isin":{"type":"string","description":"ISIN code, e.g. US0378331005 or ES0113900J37"}}},"responseSchema":{"type":"json","example":{"isin":"US0378331005","nsin":"037833100","cusip":"037833100","valid":true,"country":"United States","valid_cusip":true,"country_code":"US","control_digit":"5"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zXBe8sn0fASt_oJAml4SE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an ISIN code (ISO 6166) by checking format, check digit, issuing country, and embedded CUSIP (US/CA) or SEDOL (GB/IE) — computed locally with nothing stored.","exampleAgentPrompt":"Is US0378331005 a valid ISIN? I need to know if the format and check digit are correct, and what country issued it.","exampleUseCases":[{"title":"Pre-trade ISIN compliance check","prompt":"Before we place this order, can you verify that ES0113900J37 is a properly formatted and valid ISIN, and tell me which country issued it?"},{"title":"Extract embedded CUSIP from US ISIN","prompt":"I have the ISIN US0378331005 for an Apple security — can you validate it and pull out the embedded CUSIP so I can cross-reference it in another system?"},{"title":"Data quality check on imported securities list","prompt":"We imported a securities record with ISIN GB0002634946 — can you confirm it's a valid ISIN and verify whether the embedded SEDOL-based identifier checks out?"}],"resultDescription":"A JSON object containing: the original ISIN, validity boolean, country name and code, the embedded NSIN, CUSIP (for US/CA ISINs) with its own validity flag, and the control/check digit.","failureModes":["Malformed ISIN (wrong length or non-alphanumeric characters) returns valid=false","Incorrect check digit returns valid=false with the computed control digit","Unknown or unsupported country prefix may return country as null","Missing required 'isin' field in request body returns a validation error","Non-US/CA ISINs will not include a CUSIP field or valid_cusip flag"],"whenToPreferThis":"Use this endpoint when you need fast, offline-style validation of ISIN codes without sending data to a third-party registry — ideal for compliance pipelines, data ingestion workflows, or pre-trade checks where latency and privacy matter. Prefer it over manual regex checks because it also validates the Luhn-based check digit and decodes the embedded CUSIP or SEDOL.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:37:59.127Z","isFirstParty":false,"canonicalSlug":"isin-validator-b14a6fc4"}