action api2cart_basket_item_add { label: "BasketItemAdd" description: "Add item to basket" provider: api2cart method: POST path: "/basket.item.add.json" encoding: json input: { type: "object" properties: { customer_id: { type: "string" } product_id: { type: "string" } quantity: { type: "number" } store_id: { type: "string" } variant_id: { type: "string" } } required: ["customer_id", "product_id"] additionalProperties: false } output: { type: "object" properties: { result: { type: "object" properties: { added: { type: "boolean" } } } return_code: { type: "integer" } return_message: { type: "string" } } } }