Build commerce agents with UCP

Anchor to Get startedGet started

Install the UCP CLI and Shopify AI Toolkit plugin for your supported AI tool. Built for agent workflows, the CLI provides structured commands to search the Catalog, build carts, create checkouts, hand off buyers, and track orders. The toolkit's ucp skill helps agents apply UCP best practices against each merchant's live schema.

Before you install, make sure you have Node.js 18 or higher. The toolkit is supported on any agent that supports the skills format.

Anchor to Access universal cartAccess universal cart

One Cart, every brand. The Universal Cart API lets AI agents collect items from any merchant, on or off Shopify, into a single, unified cart, all via UCP.

Request access

Join the early access waitlist.

Anchor to Understand how Shopify does UCPUnderstand how Shopify does UCP

Shopify's MCP tools implement UCP at every step of the buyer journey:

• Negotiate and authenticate: Identify your agent and get the right access tier.
• Discover products: Search across hundreds of millions of Shopify listings.
• Carts and checkout: Build carts, convert them to checkouts, and hand off to the merchant for payment.
• Monitor orders: Receive order webhooks and fetch fresh order state on demand.

Anchor to [object Object], Negotiate and authenticate Negotiate and authenticate

Define a profile so Shopify can verify your agent and apply the right rate limits and tool access. Higher trust tiers unlock broader access, including direct checkout completion. Profiles are hosted at a well-known URL and referenced on every UCP request.

About profiles

Host a UCP profile for capability negotiation and signed-request verification.

Auth and rate limiting

Trust tiers, capability matrix, and rate limits per tier.

Anchor to [object Object], Discover products Discover products

Query products across all Shopify merchants with the Global Catalog, or scope results to a single merchant with a Storefront Catalog. When buyers pick a product, fetch the variant details you need to build a cart or hand off to a checkout permalink.

Global Catalog

Search products across every Shopify merchant from a single endpoint.

Storefront Catalog

Scope discovery to a single merchant's storefront.

Anchor to [object Object], Build carts and convert to checkout Build carts and convert to checkout

Build carts as buyers iterate. Add line items, apply localization, and estimate totals across multiple turns of conversation. When buyers are ready, convert the cart into a checkout and refer them to the merchant storefront to complete payment. Trusted agents can complete checkouts directly.

Cart MCP

Build and iterate on carts with line items, localization, and buyer context.

Checkout MCP

Convert carts into checkouts and complete purchases for trusted agents.

Anchor to [object Object], Monitor orders Monitor orders

After checkout, monitor order lifecycle changes (fulfillment events, refunds, returns, exchanges, and cancellations) with UCP-shaped order webhooks. Fetch fresh order state on demand with the get_order MCP tool when the buyer asks "Where's my order?" or when reconciling a missed webhook.

Order MCP

Fetch fresh order state on demand with the get_order tool.

Order webhooks

Subscribe to lifecycle events for fulfillment, returns, refunds, and edits.