Comment by jedwhite

At the moment, it looks like Claude Code does not support using ‘temperature’ or ‘seed’ flags. It would be awesome if they add that.

Using the request to use a seed within the prompt will mean that when Claude rights the code it could use that seed inside what it writes for randomize functions. But sadly it wouldn’t impact Claude’s own text generation’s determinism.

There is active interest on GitHub to support this. But the most recent issue with it I could see was closed in July as “not planned”