I'm aware of the issues around rules as in a default prompt. I had hoped the author of the blog meant a different mechanism when they mentioned "steering rules". I do mean something different, where an agent will self-correct when it is seen going against rules in the initial prompt. I have a different setup myself for Claude Code, and would call parts of that "steering"; adjusting the trajectory of the agent as it goes.
With Claude Code, you can intercept its prompts if you start it in a wrapper and mock fetch (someone with github user handle „badlogic“ did this, but I can’t find the repo now). For all other things (and codex, Cursor) you‘d need to proxy/isolate all comms with the system heavily.
