How do I local host an agent to mod games with me?

I’ve been trying to localhost a qwen2.5-coder with ollama and opencode with the purpose of being able to mod games easily.

I’ve had nothing but headaches, and I’ve only recently learned there’s a qwen3.8 and that most people aren’t using ollama I guess? I don’t know. But I tried really hard and got to a point where my Qwen was talking but couldn’t do tool calls or anything.

Is someone willing to help me determine which model is best and how to set it up to use tools like from the Universal-Modder GitHub.

I hate that I had to ask but I’ve been going insane.
Any information is helpful.