Connect to https://mcp.agentcard.sh/mcp with the user’s connection token (or a buy_token for org-owned accounts).
Not in the default tools/list. It is still callable by exact name, and appears when the client sends the x-expert-tools: 1 header.
What it does
Add SEVERAL items to the cart in ONE call — use this instead of repeated buy_add_to_cart whenever the user wants a multi-item order (e.g. “two pizzas, a drink, and breadsticks”). Building the whole cart at once is REQUIRED for a guest (not-yet-linked) DoorDash cart, which can otherwise hold only one item. Each item is { product_id, quantity?, options? } exactly like buy_add_to_cart (for any item flagged hasOptions, call buy_get_item_options first and pass the chosen ids). Returns the updated cart with subtotal; any item DoorDash rejected is listed under droppedLines so you can tell the user.
Returns
None.
Example call
