principle-subtract-before-you-add
Apply when sequencing an addition, refactor, or rewrite. Remove dead code, redundant validators, and stub references first, then build on the simpler base.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/backnotprop/pstack --skill principle-subtract-before-you-add- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads principle-subtract-before-you-add automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
Security audits
Independent scans of the skill's instructions and bundled files.
SKILL.md
The instructions your agent reads when the skill is triggered.
Subtract Before You Add
When evolving a system, remove complexity first, then build. Default to subtraction.
Make simplification a continual investment. Leave the design slightly simpler and more capable behind the same or smaller surface than you found it.
- Sequence removal before construction
- Cut before you polish (get to the minimum before investing in quality)
- Design for observed usage, not speculative edge cases
- No speculative validators, parsers, or guards beyond what the spec demands
- Simplify prompts (remove redundant instructions, excessive templates)
- When a reference has no novel content, delete it rather than leaving a stub
FAQ
What does the principle-subtract-before-you-add skill do?
Apply when sequencing an addition, refactor, or rewrite. Remove dead code, redundant validators, and stub references first, then build on the simpler base.
How do I install principle-subtract-before-you-add?
Run npx skills add https://github.com/backnotprop/pstack --skill principle-subtract-before-you-add in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/principle-subtract-before-you-add/ (personal) or .claude/skills/principle-subtract-before-you-add/ (project).
Which AI agents can use principle-subtract-before-you-add?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is principle-subtract-before-you-add safe to install?
Security partners have reviewed it: Gen Agent Trust Hub passed; Socket passed; Snyk passed. As with any skill, read the SKILL.md and bundled scripts before installing.
Who maintains principle-subtract-before-you-add?
It is published by backnotprop in backnotprop/pstack. It has 5,458 recorded installs.
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