Takes about five minutes. You'll need your API key and base URL from your dashboard — keep that tab open.
Click the plug icon in the top toolbar to open API Connections.
For API, choose Chat Completion, then set the source to Custom (OpenAI-compatible).
Paste the Base URL from your dashboard into "Custom Endpoint (Base URL)", and your API key into "API Key". Click Connect.
Once connected, the model dropdown will populate automatically — select it from the list.
Open or create a character and send a message. If you get an error, re-check the URL and key for extra spaces, and confirm your dashboard shows a positive balance.