## Functions

Use Functions in order to poll third-party APIs and inject information into a conversation.

- [Handling a welcome message with Transformers and Endpoints](https://support.cognigy.com/hc/en-us/articles/4412112380690-Handling-a-welcome-message-with-Transformers-and-Endpoints)
- [Functions – Refresh Access Token](https://support.cognigy.com/hc/en-us/articles/4403966790162-Functions-Refresh-Access-Token)
- [Functions Overview](https://support.cognigy.com/hc/en-us/articles/4402093408786-Functions-Overview)