How do I install the Skill Graveyard skill?

Run npx skillmds@latest add sfrangulov/skill-graveyard in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Skill Graveyard safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Skill Graveyard?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Skill Graveyard free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under MIT.

Who published Skill Graveyard?

sfrangulov (@sfrangulov) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Skill Graveyard by sfrangulov — Agent Skill

Name: Skill Graveyard
Author: sfrangulov

Skill Graveyard

Audit which Claude Code skills you actually invoke. Use when the user wants to find dead/unused skills, hallucinated skill invocations, per-project skill stats, or token cost of installed skill metadata. Triggers on "what skills don't I use?", "clean up my skills", "why didn't this skill work?", "audit skills". Runs locally; reads ~/.claude session JSONL logs. No network calls.

sfrangulov 998b4ff 1.8 KB Updated Sep 17, 2026

File contents

skill-graveyard

CLI that audits Claude Code skill usage. Two signals from one parser:

Dead installs — installed but never invoked → safe to remove.
Hallucinated invocations — invoked but not installed → typos, external-framework registrations, or model tool/skill confusion.

How to invoke

Run via npx skill-graveyard@latest <subcommand> [flags] — no install needed.

Subcommands

audit (default) — classify into active / dead / missing / hallucinated. Flags: --days N, --only <bucket>, --json, --claude-dir <path>.
prune — print removal commands for dead skills. --apply to execute (user/agents only; plugin removals always print only).
suggest — triage hallucinated/missing into actionable buckets.
projects — per-project usage breakdown (cwd from sessions).
cost — token cost estimate of installed metadata vs invocations.
outdated — check installed plugins / git skills for upstream updates (network).

Decision flow

"are there skills I don't use?" → npx skill-graveyard@latest
"clean up unused skills" → prune, then prune --apply
"skill X didn't work" → suggest (look for hallucinated/missing entry)
per-project view → projects
token cost → cost
check updates → outdated

After running, print binary output as-is. Do not summarize unless the user asks.

Frequently asked questions