If you want to use a bunch of third-party AI projects you'll need to get yourself an API key first.

How to use the ChatGPT API key There are generally two ways to use an OpenAI key: The key is entered into the settings page of a software program that accesses OpenAI for you. The key is used ...

You can only view your API key once after generating it, so if you lose it, you'll need to generate a fresh one. Remember, your API key is strictly for your usage, so don't share it.