Lean bullet-driven body that assumes Claude's competence and never explains concepts Claude already knows; the opening paragraph lightly restates the description but every other section earns its tokens.

Concrete guidance throughout — sample counts (5-20), a specific extraction checklist, an explicit output contract pointing to a copy-paste-ready schema, and a named Hard Bans list of concrete patterns to delete.

The Collection Workflow is a clear numbered sequence, but it lacks explicit validation checkpoints or a feedback loop confirming the drafted profile against the source set before reuse; checkpoints are only implicit ("confirmed VOICE PROFILE").

Well-organized sections in the body with a clearly signaled, one-level-deep reference to references/voice-profile-schema.md, which is a real file holding the detailed template; content is appropriately split.

Names multiple concrete actions — "Build a source-derived writing style profile" and "reuse that profile across content, outreach, and social workflows" — matching the anchor for listing several specific concrete actions.

Explicitly answers both what ("Build a source-derived writing style profile...") and when ("Use when the user wants voice consistency without generic AI writing tropes.") with an explicit trigger clause.

Covers natural terms users would say ("posts, essays, launch notes, docs, or site copy", "content, outreach, and social workflows", "voice consistency", "generic AI writing tropes") with good breadth of variations.

Occupies a clear niche (source-derived voice profiling for reuse) with distinct triggers unlikely to fire for generic writing or content skills.