Agent Skills
› sediman-agent/OpenSkynet
› principle-subtract-before-you-add
principle-subtract-before-you-add
GitHub指导在重构或新增功能前先移除冗余代码、无效校验和存根，通过简化基础结构来降低复杂度，使后续构建更稳健且直观。
Trigger Scenarios
进行系统重构
添加新功能
重写现有模块
Install
npx skills add sediman-agent/OpenSkynet --skill principle-subtract-before-you-add -g -y
SKILL.md
Frontmatter
{
"name": "principle-subtract-before-you-add",
"description": "Apply when sequencing an addition, refactor, or rewrite. Remove dead weight, redundant validators, and stub references first, then build on the simpler base.",
"disable-model-invocation": true
}
Subtract Before You Add
When evolving a system, remove complexity first, then build. Deletion gives you a simpler base, which makes the next addition smaller and less brittle.
Why: Adding to a complex system compounds complexity. Removing first cuts the surface area, reveals the essential structure, and usually makes the next design obvious. Default to subtraction.
The pattern:
- 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
- Out-of-spec features drag validators behind them. Persistence, retry-on-startup, and schema migration each need guards to defend their inputs.
- Simplify prompts (remove redundant instructions, excessive templates)
- When a reference has no novel content, delete it rather than leaving a stub
Version History
- c9d8953 Current 2026-07-05 19:53
