{"uid":"cap_Q928W9oNuNrXmv_tL6Gri","slug":"agent402-isin-validator-c8824699","name":"Agent402 ISIN Validator","description":"Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.","url":"https://agent402.co.uk/v1/validate/isin?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"isin":{"type":"string","description":"12-char ISIN (e.g. US0378331005)"}}},"responseSchema":{"type":"json","example":{"nsin":"037833100","valid":true,"country":"US","provenance":{"depth":"checksum_only"},"valid_format":true,"valid_checksum":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__-x-h1ITHrSrqIui1YNdr","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a 12-character ISIN string against ISO 6166 format rules and Luhn check digit — returns country code, NSIN, and per-check results.","exampleAgentPrompt":"Can you check whether US0378331005 is a valid ISIN — I need to confirm the format and Luhn checksum are correct before I submit this trade?","exampleUseCases":[{"title":"Pre-trade securities ID gate","prompt":"Before sending this order, check that the ISIN IE00B4L5Y983 is structurally valid — correct format and Luhn check digit — so we don't reject it downstream."},{"title":"Bulk data pipeline ISIN scrub","prompt":"I've got an ISIN I scraped from a data feed: GB0002634946 — can you validate the format and checksum so I can decide whether to keep or discard this record?"},{"title":"Compliance form ISIN verification","prompt":"A user just typed DE0005140008 into our compliance form as a securities identifier — verify it's a properly formatted ISIN with a valid check digit before we save it."}],"resultDescription":"A JSON object with: `valid` (overall pass/fail boolean), `valid_format` (ISO 6166 12-char structure check), `valid_checksum` (Luhn digit check), `country` (2-letter ISO country code from the ISIN prefix), `nsin` (the 9-character national securities identifier portion), and `provenance.depth` indicating this is a local checksum-only check (not a live registry or exchange lookup).","failureModes":["Input ISIN is not exactly 12 characters — returns valid:false with format failure","Non-alphanumeric characters in ISIN — format check fails","Correct format but wrong Luhn check digit — valid_format:true but valid_checksum:false and valid:false","Unknown or invalid country prefix — may still pass checksum but country field reflects raw prefix","Missing or empty isin field — likely 4xx error or validation failure response","Payment failure (402) if x402 authorization header is not provided or insufficient USDC balance"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap ($0.001) structural and checksum gate on an ISIN before submitting to a downstream system, and you do NOT need live exchange listing confirmation or CUSIP/SEDOL registry lookup. It is ideal for data pipeline scrubbing, form validation, or compliance pre-checks where ISO 6166 format correctness and Luhn integrity are sufficient.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T23:26:33.107Z","isFirstParty":false,"canonicalSlug":"agent402-isin-validator-c8824699"}