Product Identifiers and Variants for Agentic Commerce
Keep product IDs stable and model purchasable variants so machines can distinguish what is actually being offered.
Why it matters
Stable product identifiers let systems distinguish a product update from a new item. SKUs, GTINs and platform IDs have different ownership and validation rules, so they should not be treated as interchangeable.
How it works
Variant modeling should preserve the parent-product relationship while giving each purchasable selection enough information to identify its price, availability and distinguishing attributes.
Practical takeaway
Automated format checks can detect duplicates and malformed check digits, but they cannot prove identifier ownership or registry assignment.
Use the tools, then verify against the protocol or platform you actually implement.Browse all tools