This is a structured framework for capturing and documenting someone's writing voice so you can reproduce it authentically. It walks through eight phases: collecting writing samples (including "peak voice" and "off voice" examples), analyzing sentence patterns and punctuation signatures, mapping word choices and metaphor preferences, identifying emotional texture, and synthesizing everything into a reusable voice guide. The approach is thorough, maybe more thorough than most use cases need, but if you're ghost writing, maintaining voice across a team, or training models on specific author styles, the lexical fingerprinting and conceptual DNA sections give you concrete tracking tables instead of vague impressions. The litmus test framing (makes the source say "yes, that's me" not "I guess that's accurate") keeps you honest about whether you're actually capturing spirit or just mechanically copying surface patterns.
npx skills add https://github.com/jwynia/agent-skills --skill voice-analysis