Magento 2 does not have a api call to add multiple product cart in a single call

[magento-engcom-team]

Preconditions

1. use api call guest-carts/27f7f91cf4344bb9bda7d30b076216f3/items

Steps to reproduce

1. use api call guest-carts/27f7f91cf4344bb9bda7d30b076216f3/items
2. post data sku qty

Expected result

1. There should be a way to add multiple product to cartt, why this functionality is not provided.

Actual result

1. Can only add 1 product in 1 call to cart

Original Report: magento/magento2#8501 by @umang-ranium

[khuenqdev]

Hello, is there any update regarding this issue? Adding multiple items to cart is a good feature to have :)

[mack4hack]

@khuenqdev the issue is opened since the long time. You need to write custom APIs for it.
One API for Logged-in customer and one for guest.

[khuenqdev]

@khuenqdev the issue is opened since the long time. You need to write custom APIs for it.
One API for Logged-in customer and one for guest.

Yeah, it seems there's already a generic API for this kind of action that's actually update a quote with multiple items in it. The weird thing is the route actually refers to customer's cart/quote but you don't really need to login to use this API. Here's the API and sample request data:

[PUT] /V1/carts/mine

{
"quote": {
"id": {{quote_id}},
"items": [
{
"sku": "24-MB02",
"qty": 2,
"product_option": {
"extension_attributes": {}
},
"quote_id": {{quote_id}}
},
{
"sku": "24-MB04",
"qty": 4,
"product_option": {
"extension_attributes": {}
},
"quote_id": {{quote_id}}
}
],
"customer": {
"id": 1,
"email": "roni_cost@example.com",
"firstname": "Veronica",
"lastname": "Costello",
"store_id": 1
},
"billing_address": {
"firstname": "Veronica",
"lastname": "Costello",
"customer_id": 1,
"customer_address_id": 1,
"telephone": "(555) 229-3326",
"country_id": "US",
"postcode": "49628-7978",
"region_id": 33,
"region_code": "MI",
"region": "Michigan",
"street": [
"6146 Honey Bluff Parkway"
],
"city": "Calder",
"same_as_billing": 1,
"save_in_address_book": 1
},
"customer_note": "",
"store_id": 1,
"extension_attributes": {}
}
}

[studiocodeur]

This works!!!
It's a weird one but saved me having to code up an extension...!!