[
  {
    "name": "render_product_list",
    "description": "Render an interactive product card list. Users can browse products, select specifications (size/flavor/etc.), and add items to cart. Returns the user's selection via mcp-app-response.",
    "inputSchema": {
      "type": "object",
      "properties": {
        "title": {
          "type": "string",
          "description": "Title displayed at the top of the product list"
        },
        "products": {
          "type": "array",
          "description": "Array of product objects to display as cards",
          "items": {
            "type": "object",
            "properties": {
              "id": { "type": "string", "description": "Unique product identifier" },
              "name": { "type": "string", "description": "Product name" },
              "description": { "type": "string", "description": "Short product description" },
              "image": { "type": "string", "description": "Product image URL" },
              "price": { "type": "number", "description": "Base price" },
              "currency": { "type": "string", "description": "Currency symbol, default: '$'", "default": "$" },
              "specs": {
                "type": "array",
                "description": "Available specification groups (e.g. size, flavor)",
                "items": {
                  "type": "object",
                  "properties": {
                    "label": { "type": "string", "description": "Spec group label, e.g. 'Size'" },
                    "options": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "name": { "type": "string", "description": "Option name, e.g. 'Large'" },
                          "price_delta": { "type": "number", "description": "Price adjustment, default 0", "default": 0 }
                        },
                        "required": ["name"]
                      }
                    }
                  },
                  "required": ["label", "options"]
                }
              },
              "tags": {
                "type": "array",
                "items": { "type": "string" },
                "description": "Optional tags like 'Hot', 'New', 'Sale'"
              }
            },
            "required": ["id", "name", "price"]
          }
        }
      },
      "required": ["title", "products"]
    },
    "_meta": {
      "ui": {
        "resourceUri": "ui://ecommerce-storefront/product-list"
      }
    }
  },
  {
    "name": "render_order_confirm",
    "description": "Render an order confirmation page with order details, total price, and a payment action button or QR code. Returns 'confirmed' or 'cancelled' via mcp-app-response.",
    "inputSchema": {
      "type": "object",
      "properties": {
        "title": {
          "type": "string",
          "description": "Page title, e.g. 'Order Confirmation'"
        },
        "order": {
          "type": "object",
          "description": "Order details",
          "properties": {
            "order_id": { "type": "string", "description": "Order ID" },
            "items": {
              "type": "array",
              "description": "Ordered items",
              "items": {
                "type": "object",
                "properties": {
                  "name": { "type": "string", "description": "Product name with specs" },
                  "quantity": { "type": "integer", "description": "Quantity", "default": 1 },
                  "price": { "type": "number", "description": "Unit price" },
                  "image": { "type": "string", "description": "Product image URL" }
                },
                "required": ["name", "price"]
              }
            },
            "subtotal": { "type": "number", "description": "Subtotal before tax/fees" },
            "tax": { "type": "number", "description": "Tax amount", "default": 0 },
            "discount": { "type": "number", "description": "Discount amount", "default": 0 },
            "total": { "type": "number", "description": "Final total" },
            "currency": { "type": "string", "description": "Currency symbol", "default": "$" }
          },
          "required": ["order_id", "items", "total"]
        },
        "payment": {
          "type": "object",
          "description": "Payment configuration",
          "properties": {
            "method": {
              "type": "string",
              "enum": ["button", "qrcode", "link"],
              "description": "Payment UI type: button (confirm button), qrcode (QR code image), link (external payment URL)"
            },
            "qrcode_url": { "type": "string", "description": "QR code image URL (when method=qrcode)" },
            "payment_url": { "type": "string", "description": "External payment URL (when method=link)" },
            "button_text": { "type": "string", "description": "Payment button text, default: 'Confirm Payment'", "default": "Confirm Payment" }
          },
          "required": ["method"]
        }
      },
      "required": ["title", "order", "payment"]
    },
    "_meta": {
      "ui": {
        "resourceUri": "ui://ecommerce-storefront/order-confirm"
      }
    }
  }
]