groundskeeper

Skill-usage tracking and cleanup for Claude Code.

You install skills and plugins, and your skill set quietly grows — most of them you never touch again. groundskeeper watches which skills you actually invoke, flags the ones that have gone cold, and helps you reversibly prune the unused personal ones. Configurable thresholds, keep/snooze when you want to silence a skill, and an interactive cleanup that asks before it touches anything.

No prompts during normal work, no measurable token cost: a background hook appends one line per skill use, and a once-a-week nudge only speaks up when something's actually gone cold.

Zero dependencies

Pure Node.js (fs/path/os only). node ships with Claude Code, so there's nothing to install — no jq, no bash, no bundled binaries. Runs natively on macOS, Linux, and Windows.

Install

/plugin marketplace add zvoque/groundskeeper
/plugin install groundskeeper@groundskeeper

Restart the session so the hooks load. Usage logs immediately; cold flags appear after the grace + cold window.

How it works

• A PostToolUse hook matched to the Skill tool appends one line to ~/.claude/groundskeeper/usage.jsonl every time a skill runs — 0 model tokens, fires only on skill use.
• A SessionStart hook prints at most one reminder line, at most once per nudge_days (default 7), and only if non-suppressed cold skills exist (~20 tokens/week).
• /skill-audit scans and reports. /skill-cleanup interactively prunes.

"Cold" definition (configurable)

A skill is cold when it hasn't been invoked in cold_days (default 45), ignoring any skill first seen less than grace_days (default 14) ago. Never-used skills are measured idle from when tracking began, so a fresh install flags nothing until it has observed for the cold window.

Keep & snooze

• keep — permanently exclude a skill you use rarely but want to keep.
• snooze — temporarily exclude for N days (default snooze_days, 30).

Kept and snoozed skills never appear in cold reports or nudges.

Removal is reversible

Disabling moves a skill to ~/.claude/skills-disabled/<name>/ with a restore note. Nothing is deleted; restore anytime. Only personal skills (~/.claude/skills) are removable — plugin skills are reported on (and a fully-cold plugin is flagged), but never individually deleted.

Commands

• /skill-audit — read-only scan: hot/cold/suppressed counts, the cold-skill table, and the active config window.
• /skill-cleanup — interactive prune. Asks whether to disable all cold skills, choose specific ones, or snooze/keep instead — and never acts without your selection.

Both are thin wrappers over plugins/groundskeeper/scripts/audit.js, which you can also run directly:

audit.js <cmd>	Action
report	JSON usage report
disable <name>... / restore <name>...	reversibly disable / restore personal skills
list-disabled	list disabled skills
config / config set <key> <val>	get/set thresholds (cold_days, grace_days, nudge_days, snooze_days)
keep / unkeep <name>...	permanent suppression
snooze <name> [days] / unsnooze <name>...	temporary suppression

Data

Stored under ~/.claude/groundskeeper/ (survives plugin updates):

• usage.jsonl — append-only log (skill name + timestamp only; no prompt content).
• config.json — thresholds.
• state.json — last-nudge time, disabled registry, kept list, snoozed list.
• ~/.claude/skills-disabled/ — disabled-skill graveyard.

Limitations

• Tracks personal + plugin skills only. Project-scoped skills (./.claude/skills) are not tracked.
• No transcript backfill — the log starts fresh on install.

Development

git clone https://github.com/zvoque/groundskeeper
cd groundskeeper
node tests/run.js

Local install for development (instead of the marketplace add above):

/plugin marketplace add /path/to/groundskeeper
/plugin install groundskeeper@groundskeeper

License

MIT