{"schemaVersion":"1.0","toolId":"commerce.gtin-validate","toolVersion":"1.0.0","mode":"static-example","input":{"code":"036000291452"},"result":{"valid":true,"format":"GTIN-12","expectedCheckDigit":"2","scope":"Checks identifier length and check digit only; does not confirm product ownership or existence."},"provenance":"Generated from the tool handler at site build time with HTTP fetch disabled. This is fixed sample data, not a customer execution.","access":{"paymentRequired":false,"executionPerformedOnRead":false,"acceptsCustomInput":false},"paidResponse":"Current full calls are free and return result with chargedMicroUsd=0, with no receipt.","contractUrl":"/v1/content/tools/commerce.gtin-validate"}