📋 Open Standard

Universal Commerce Protocol

UCP is an open standard that defines how AI agents discover, search, and transact with online stores — regardless of platform, language, or vendor.

Shopwalk implements UCP. So does any store running a Shopwalk plugin. Any AI agent that speaks UCP can shop from any UCP-compatible store.

Design principles

🔓

UCP is a public specification. No licensing fees. No vendor lock-in. Anyone can implement it.

🔌

Designed to work with WooCommerce, Shopify, Magento, BigCommerce, or any custom commerce stack.

🤖

Built for machine-to-machine commerce. Structured responses. Deterministic actions. No UI scraping.

🔒

Agents operate with verified identities. Stores receive legitimate buyers without exposing personal data.

⚡

A small, stable API surface. Easy to implement, hard to break.

🌐

An agent that speaks UCP works with every UCP store. A store that speaks UCP works with every UCP agent.

UCP defines six operations an AI agent can perform on any compatible store.

GET/ucp/catalogDiscover products — paginated, filterable, structured

POST/ucp/searchNatural language semantic search across the catalog

GET/ucp/products/:idFull product detail including variants, inventory, shipping estimates

POST/ucp/cartCreate a cart and add items

POST/ucp/checkoutSubmit an order on behalf of an authenticated agent

GET/ucp/orders/:idCheck order status, tracking, and events

Live

Store plugin

Live

Agent API

Planned

Coming soon

Install the free Shopwalk plugin and your store becomes UCP-compatible in minutes.