Does this actually work for you? I've tried adding rules in my user profile as well as adding instruction in my CLAUDE.md but my models always eventually go off the rails and start spewing technical jargon in doc strings & descriptions.
At this point I'd do anything to get claude to dumb down and simplify it's explanations in my code, so I'm looking forward to giving this a try and seeing how it goes.
I've added the same thing to the system prompt of the internal agent I wrote for work, which talks to claude models. I have not gone into the details on whether it adheres to the format exactly, but i do see visibly less slop and less marketing nonsense in the Assistant messages.
At this point I'd do anything to get claude to dumb down and simplify it's explanations in my code, so I'm looking forward to giving this a try and seeing how it goes.