Names the domain (codebase size minimization) and mentions some actions ('deletion', 'measures success by final code amount'), but lacks concrete specific actions like 'remove unused imports', 'consolidate duplicate functions', or 'eliminate dead code paths'.

Clearly answers both what ('minimizing total codebase size', 'bias toward deletion') and when ('Only activate when explicitly requested by user', 'Manual-only skill'), providing explicit trigger guidance about requiring explicit user request.

Contains some relevant terms like 'codebase size', 'deletion', and 'minimize', but misses common natural variations users might say such as 'reduce code', 'clean up', 'remove dead code', 'code cleanup', or 'shrink codebase'.

The 'manual-only' and 'explicitly requested' constraints create a clear niche that won't accidentally trigger. The specific focus on minimizing code size through deletion distinguishes it from general refactoring or code quality skills.

Every section earns its place. No explanation of concepts Claude knows, no padding. The content is lean and direct, using bullet points and short phrases effectively.

Provides clear mental frameworks and questions to ask, but lacks concrete code examples or specific commands. The guidance is conceptual rather than executable - no line-counting scripts, no deletion commands, no before/after code samples.

Clear sequence: load mindset first, then apply three questions in order. The 'Before You Begin' section has explicit steps with a gate ('Do not proceed until'). For a conceptual/decision-making skill, the workflow is appropriately structured.

Well-organized with clear sections. References to external files (references/, adding-reference-mindsets.md) are one level deep and clearly signaled. Content is appropriately split between overview and detailed reference materials.