Free tone kit
Opus 5 pads every answer with suggestions you did not ask for, caveats, and a to-do list at the end. Three ways to stop it: change the output format, save it as a skill you call when you want it, and keep it portable so it works on any model.

The answer stops when it is done
No suggestions you did not ask for, no caveats, no praise, no to-do list at the end. You ask, it answers, it stops.
You can read it at 11pm
Small words and short sentences, with a real comparison for anything abstract. Same information, in language that goes in on the first read.
You choose when it applies
Every one here works as an always-on output format or as a skill you call for a single answer.
Will this make Claude worse at code?
No. Every format here carries keep-coding-instructions: true, so Claude keeps its coding behaviour and only changes how it talks to you. Paths, commands and file names stay exact.
Do I need a paid plan?
No. Output formats and skills are files on your machine. They cost nothing and work on any plan.
Does this only work on Claude?
The folder paths are Claude Code. The instructions inside are plain English, so the same text works as a system prompt on any model. Option 3 covers that.