Core principle. Build the tool that does it or proves it, instead of working by hand. The tool is the artifact a reviewer can rerun.
Applies to any non-trivial work, not just bulk work: edits, migrations, analyses, checks. A codemod, script, generator, or a skill the subagents follow all count. The second clause is the load-bearing one and is why this is pattern-tooling-leverage rather than ordinary automation advice — the tool exists so the reviewer can re-derive the result, which is also what pstack-create-verification-skill and pstack-show-me-your-work are for.
See Also
- pstack-poteto-mode — indexes this principle inline and reads the index at task start.
- pstack — the twenty-three-principle set this belongs to.