{
  "version": "1.0.0",
  "description": "WebMCP in-browser tool registry for FlexExt storefront.",
  "tools": [
    {
      "name": "add_to_cart",
      "description": "Add an extension license to the visitor shopping cart.",
      "parameters": {
        "product_id": {
          "type": "number",
          "required": true
        },
        "quantity": {
          "type": "number",
          "default": 1
        }
      }
    },
    {
      "name": "filter_extensions",
      "description": "Filter extensions by platform version (OpenCart 4 or OpenCart 3) and category.",
      "parameters": {
        "oc_version": {
          "type": "string",
          "enum": [
            "oc4",
            "oc3",
            "all"
          ]
        }
      }
    }
  ]
}