{"ucp":{"version":"2026-08-25","services":{"dev.ucp.shopping":[{"version":"2026-08-25","transport":"rest","endpoint":"https://creation.streetshirts.com/ucp/v1","spec":"https://ucp.dev/2026-08-25/specification/overview","schema":"https://ucp.dev/2026-08-25/services/shopping/rest.openapi.json"}]},"capabilities":{"dev.ucp.shopping.cart":[{"version":"2026-08-25","spec":"https://ucp.dev/2026-08-25/specification/shopping/cart","schema":"https://ucp.dev/2026-08-25/schemas/shopping/cart.json"}],"com.streetshirts.creation.design":[{"version":"2026-10-13","extends":"dev.ucp.shopping.cart","spec":"https://creation.streetshirts.com/agent/commerce/ucp","schema":"https://creation.streetshirts.com/agent/commerce/ucp/design.json"}]},"payment_handlers":{}},"description":"Streetshirts custom garment carts. Customer payment continues in the existing Shopify checkout."}