Product

GTIN / UPC / EAN identity. 1 pay-per-call product endpoint for AI agents — keyless, USDC via x402.

product.gtin$0.0014

Decode and validate a product barcode (GTIN / UPC-A / EAN-13 / EAN-8 / GTIN-14 / ISBN-13 / ISSN).

GET /api/product/gtin

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec
/llms.txt — plain-text manifest for LLM ingestion