SmartEngage has a full featured and robust API.
You can locate your API Key here: https://smartengage.com/settings/account
Your API Key is for your entire account. This means you have one API Key and the integrations which use it will then have options for you to select which avatar your integration applies to.
If you are a developer and need access to our API documentation please follow this link: https://smartengage.com/docs/#smartengage-api