The sites have an API so that users can access account data (such as sales rates and referral information) via outside applications and without the use of your account password.
If you are a developer and would like to use the API for an application you are developing, you can access all the documentation here.
Your API key is a password for applications to access your account data through our API, without using your Envato password. You should never give out your Envato password to anyone.
To generate an API key, select Settings from the account dropdown, then navigate to the API Keys tab. Multiple API keys can be generated so it is recommended to use one per application.