StardewGPT enables immersive, AI-generated conversations with Stardew Valley NPCs. It uses GPT-3.5, the same engine powering ChatGPT, and therefore requires access to the OpenAI API to work.
StardewGPT is primarily a proof of concept. It is not recommended for a regular playthrough.
For general prerequisites for playing with Stardew Valley mods, see the Player Guide on the Stardew Valley Wiki. If you don't have an OpenAI account yet, you can create one here.
OPENAI_API_KEY
and set it to your key. Here's how to do that on Windows.