{"activeVersionTag":"latest","latestAvailableVersionTag":"latest","collection":{"info":{"_postman_id":"662bcd5c-24e1-47d1-8212-6fd7e1f66eda","name":"CodeClassify API — Barcode & Business Code Toolkit","description":"# CodeClassify API — Barcode & Business Code Toolkit\n\nDeterministic validation & conversion for the product and business codes you deal with every day: barcode check digits (**GTIN / UPC / EAN / SSCC**), **ISBN** conversion, **IBAN**, **EU VAT**, **ISIN**, **VIN**, **ISO 6346** shipping containers, **US ABA** routing numbers, plus **NAICS / SIC / HS** code lookups and the **SIC ↔ NAICS** crosswalk. Same input, same output, every time — no AI guessing.\n\n**Links**\n- 🌐 Website + 16 free browser tools: https://code-classify.com\n- 📖 API docs, endpoints & pricing: https://code-classify.com/api/\n\n## Getting started\n1. Get a free API key at https://code-classify.com/api/\n2. Set the collection variable `api_key` to your key (the `X-Api-Key` header is then sent automatically on every request).\n3. Send any request in the folders below.\n\nMost validation endpoints accept a **single value** or a **batch of up to 100** per call. 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