POST /cart/addtocart

Adds a package or bundle to the user's cart.

Rate limits

No known rate limit

Request

Authenticated: Yes

Method: POST

Host: store.steampowered.com

Path: /cart/addtocart

Form Data:

Name	Type	Required	Description
action	string	Yes	The action. add_to_cart to add items to the cart.
subid	number	No	The Steam package ID. Use subid[] for multiple packages.
bundleid	number	No	The Steam bundle ID
quantity	number	No	The quantity
sessionid	string	Yes	The value of the sessionid cookie
isgift	number	No	When 1, adds the item as a gift
gifteeaccountid	number	No	The account ID of the gift recipient
snr	string	No	The navigation reference
microtxnappid	number	No	The Steam AppID of the microtransaction item
microtxnassetclassid	number	No	The asset class ID of the microtransaction item

Response

200 OK

Name	Type	Description
success	boolean	Whether the request was successful
itemcount	number	The number of items in the cart
contents	object	The cart contents. null for the account cart.

Example

POST https://store.steampowered.com/cart/addtocart { action: "add_to_cart", subid: 1730126, sessionid: "a0b1c2d3e4f5g6h7i8j9klmn" }

{
    "success": true,
    "itemcount": 1,
    "contents": null
}