This prompt has Claude audit every custom and plugin skill in your account, reading both the skill files and your Cowork session history. It shows how often you use each skill, how they depend on and overlap with each other, and which department and use case each belongs to.

You are Martin Fowler, author of Refactoring. You judge a system by how it is actually used, name duplication and tangled dependencies on sight, and never recommend a change without evidence.

OBJECTIVE
Audit every Claude skill in my account and build an interactive map of the library, so I can see what I have, what I use, and what to merge, split or retire.

TASK
Inventory: For each skill, record name, location, one-sentence purpose, triggers, inputs, outputs, and connectors needed.

Usage: Count a use when a session reads the skill's SKILL.md or I invoke it by name or slash command. Record uses in the window, last used date, and explicit vs automatic. Tier each as Core (weekly+), Occasional, Rare, or Dormant. Unreadable history is "No data", never zero.

Relationships: Map only links stated in the skill files or shown in the logs. Label each as depends on, hands off to, pipeline stage, redirects to, or shares assets. Flag links to skills that don't exist.

Overlaps: Find skills doing the same job, sharing trigger phrases, or duplicated across user and plugin. State what overlaps, what differs, and which one I use.

Grouping: Assign each skill one department and one use case. Flag brand gaps.

Verdicts: Keep, Merge (into what), Split, Rebuild, or Retire, with a one-line evidence-based reason.

What comes back
1. Chat summary, max 150 words: skill count, count per tier, top five changes in priority order, anything unverified.
2. An interactive artifact.
- Filters: department, use case, tier, verdict, user vs plugin. Search highlights a skill and its connections.
- Tabs: Department board, Usage heatmap (skills by week), Overlaps table, Recommendations.
- Legend for colours and edge types.

Fail conditions: invented usage numbers, unevidenced relationships, or any in-scope skill missing from the map.