Apply when you catch yourself writing the same instruction a second time, or notice a recurring correction. Encode the rule as a lint, metadata flag, runtime check, or script instead of more text.
npx skills add https://github.com/backnotprop/pstack --skill principle-encode-lessons-in-structure
If the lesson needs judgment and cannot be encoded, make the instruction more prominent and add an example of the failure mode.
Corollary: If the fix is structural, only use the structural fix. The instruction is the symptom.
Take backnotprop/principle-encode-lessons-in-structure from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.