You can manage issued licenses data and get the list of downloadable files via API at marketplace.cs-cart.com/api/4.0/licenses.

Request for a list of licenses

The request for a list of licenses looks like this:

GET http://marketplace.test/api.php?_d=4.0/licenses
Content-Type: application/json
Authorization: Basic c2thdGVyNEBjcy1jYXJ0LmNvbTpvMmszNzIycTVzNnFJTVo5M0RCNzgxWUZwYTY4ZjRCMw==

Response:

To get one specific license you need to send a request with the license ID. 

For example: http://marketplace.test/api.php?_d=4.0/licenses/{id}

You can also use various parameters in the URL to search for licenses: user_id, product_id, page, order_id, items_per_page, license_number, email, domain_name.

For example: http://marketplace.test/api.php?_d=4.0/licenses&user_id=2947

Editing domains and a license expiration date: expiration date in the timestamp format

The date editing request looks like this:

PUT http://marketplace.test/api.php?_d=4.0/licenses/{id}
Content-Type: application/json
Authorization: Basic c2thdGVyNEBjcy1jYXJ0LmNvbTpvMmszNzIycTVzNnFJTVo5M0RCNzgxWUZwYTY4ZjRCMw==

Response:

Both parameters can be passed in separate requests. You can pass both a string and an array in domain_name:

Getting a list of files and links to download the package file:

You need to add the get_all_packages=1 to a request for a list of licenses:

GET http://marketplace.test/api.php?_d=4.0/licenses&get_all_packages=1
Content-Type: application/json
Authorization: Basic c2thdGVyNEBjcy1jYXJ0LmNvbTpvMmszNzIycTVzNnFJTVo5M0RCNzgxWUZwYTY4ZjRCMw==

Response: