magento2 add to cart rest api

Question

i want to know the magento 2 rest api for add product to cart am trying post /rest/V1/guest-cart and am getting cart_id then post /rest/V1/:card_id/items in postman and am getting error like

{
 "message": "%fieldName is a required field.",
 "parameters": {
 "fieldName": "cartItem"
 }
}

Answer 1

This way only for registered customers:

Request path - http://127.0.0.1:8000/rest/V1/carts/3/items

Where 3 is your cart id

Method: POST

BODY: { "cartItem" : { "sku": "24-MB01", "qty": "1", "quote_id": 3 } }

Cart Id ( quote_id ) you can retrieve via:

http://127.0.0.1:8000/rest/V1/customers/1/carts

Method: POST

The response will be similar to:

"3"

Checked via Postman

Answer 2

here is the swagger documentation of Magento2 Rest endpoints, please search for quoteGuestCartItemRepositoryV1, there are some helpful examples, data structure etc.

swagger doc

Thanks.