You can find your account's API Token under My Settings > Password & API.
Your API Token is a 32 character string – a unique ID linked to your Sketchfab account. You can use this token for remote uploads from our exporters or with the API.
Keep your API Token SECRET. Anyone with your token could potentially make changes to your account and your models.
If you need to reset your API Token, you can do so by going through the password reset
process. If you have any doubt about the security of your account, please feel free to contact us