add_to_cart

Active

Tool of Kifly — Agentic Commerce & Payments

declared in 1.0.0

Requires `checkout:write` scope. Add a product variant to an existing cart. Use the variant_id from search_products results. Returns full cart state including item_ids you can use with update_cart_item. **Max quantity per item and max cart total are enforced — call `get_platform_limits` to check the current limits before building a large cart.** Exceeding the per-item limit returns 400 `QUANTITY_EXCEEDS_LIMIT`; exceeding the cart total returns 400 `CART_TOTAL_EXCEEDS_LIMIT` at checkout. `cart.kifly_purchasable` (and `cart.fulfillment`) carries the same non-transactable signal as create_cart's `seller` field — check it before telling the buyer this is a real purchase.

Parameters schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "cart_id",
    "variant_id"
  ],
  "properties": {
    "cart_id": {
      "type": "string",
      "description": "Cart ID from create_cart"
    },
    "quantity": {
      "type": "integer",
      "default": 1,
      "minimum": 1,
      "description": "Quantity to add"
    },
    "variant_id": {
      "type": "string",
      "description": "Product variant ID from search_products results"
    }
  },
  "additionalProperties": false
}

What this tool wraps· 0 endpoints

min confidence0.70 0.50

No endpoints wrapped at confidence ≥ 0.70.

Parent server

Kifly — Agentic Commerce & Payments

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