What is the Universal Commerce Protocol?

The Universal Commerce Protocol (UCP) is an open standard that lets AI agents interact with your store directly — browsing your catalog, checking inventory, getting pricing, and initiating checkout — through a single endpoint at /.well-known/ucp.

Why it matters

  • AI shopping agents can browse, compare, and purchase from your store programmatically
  • Standardized access means any AI agent can integrate with your store without custom code
  • Commerce actions like checking inventory, getting shipping estimates, and initiating checkout become AI-accessible
  • Visibility — stores without UCP support may be skipped by AI agents that can transact with competing stores

What Lantern does

Lantern generates and maintains a /.well-known/ucp endpoint for your store, exposing your product catalog, pricing, and availability in the UCP format. As your catalog changes, the endpoint stays in sync automatically.

Related

UCP works alongside the Agent-to-Agent Protocol — UCP handles commerce-specific interactions, while A2A enables broader AI agent collaboration and discovery.

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