How does authentication works?
Twproject API authentication is based on an API key that can be generated by every Twproject enabled user, the API will operate with this user privileges, you can read more details below:
https://twproject.com/support/api-documentation
Which events can call webhooks?
Webhooks can be called on every event that are subscribed on project and other several creation events, you can find the complete list here:
https://twproject.com/support/api-documentation