Help me with the launch of the server! PLS

[lonya]

https://api-trade.opskins.com/IUser/CreateVCaseUser/v1/?site_url=https://vcase-zjccfeoiqx.now.sh&display_name=vcase
{
"status": 400,
"time": 1530550007,
"message": "site_url input is required."
}
what am I doing wrong ?

[lonya]

okay with this figured out the wrong request sent SET POST ....
{
"status": 1,
"time": 1530555455,
"response": {
"api_key": "************************************************",
"user": {
"id": -240,
"steam_id": "",
"display_name": "localhost",
"avatar": null,
"twofactor_enabled": false,
"api_key_exists": true,
"sms_phone": null,
"contact_email": null,
"allow_twofactor_code_reuse": false,
"inventory_is_private": true,
"vcase_restricted": true
}
}
}

but how can I get my key that this is my Steam Id