{
  "id": "ucp.capabilities.catalog-cart-order",
  "protocol": "ucp",
  "layer": "checkout",
  "role": "merchant",
  "status": "recommended",
  "title": "Expose catalog, cart and order capabilities where you support them",
  "description": "UCP defines catalog, cart, checkout and order capabilities; advertise only what you implement.",
  "goal": "Catalog lets agents search and look up products, cart supports multi-item baskets, order lets agents track status after purchase.",
  "note": "Capability compatibility is by exact version equality, not by date order.",
  "how_to_implement": {
    "steps": [
      "Add each implemented capability with its version to the profile.",
      "Implement the matching REST or MCP binding."
    ]
  },
  "resources": [
    {
      "label": "UCP spec overview (latest): versioning and hosting",
      "url": "https://ucp.dev/latest/specification/overview/",
      "type": "spec",
      "publisher": "UCP"
    }
  ],
  "audit": {
    "method": "http_get",
    "automatable": true,
    "url_pattern": "/.well-known/ucp",
    "expect": {
      "status": 200,
      "json_keys": [
        "ucp.capabilities"
      ]
    },
    "human": "Each capability listed in the profile carries a version; endpoints respond per the spec."
  },
  "how_to_verify": "Each capability listed in the profile carries a version; endpoints respond per the spec.",
  "artifacts": [
    "catalog",
    "cart",
    "order"
  ],
  "depends_on": [
    "ucp.discovery.well-known"
  ],
  "status_note": "Capability compatibility is by exact version equality, not by date order.",
  "verified": true,
  "slug": "ucp-capabilities-catalog-cart-order",
  "category": "checkout",
  "url": "https://vreeman.ai/commerce/checklist#ucp.capabilities.catalog-cart-order",
  "updated": "2026-10-12",
  "sources": [
    {
      "label": "UCP spec overview (latest): versioning and hosting",
      "url": "https://ucp.dev/latest/specification/overview/",
      "type": "spec",
      "publisher": "UCP"
    }
  ],
  "related_slugs": [
    "ucp-discovery-well-known"
  ]
}