update_item_quantity
Change the quantity of a line item in a cart. Use quantity=0 to remove the item. Returns the updated cart state.
No store we check lists this tool.
Input schema
As a store we check lists it in tools/list.
Not a tool the spec's MCP binding defines at release 2026-08-25.
inputSchema
{
"type": "object",
"required": [
"cartId",
"itemId",
"quantity"
],
"properties": {
"cartId": {
"type": "string",
"description": "the base62 cart id"
},
"itemId": {
"type": "integer",
"description": "the line item id (numeric, e.g. 1, 2, 3)"
},
"quantity": {
"type": "integer",
"description": "the new quantity (0 removes the item)"
}
}
}
