I was looking to see how you're supposed to configure v3, then realized you're probably using the API, and came across this:

> The current version of the deepseek-chat model's Function Calling capabilitity is unstable, which may result in looped calls or empty responses. We are actively working on a fix, and it is expected to be resolved in the next version.

https://api-docs.deepseek.com/guides/function_calling

That's disappointing.