To use the Sharedcloud API, you will need an account in Sharedcloud. Please make sure that you have one.
If this is the case, then you need to get your personal Token (careful, it changes every time you update your user account)
curl -d "username=my_username&password=my_password" -X POST https://sharedcloud.io/api/v1/api-token-auth/
After you have your personal Token, add it to the HEADER of any request you do to the Sharedcloud API, by following this format:
Authorization: Token <your_token>