# Howells Arc Prune Agents > - Skill: `tomevault-io/howells-arc-prune-agents` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/howells-arc-prune-agents` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/howells-arc-prune-agents/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/howells-arc-prune-agents --- Arc-owned files live under the Arc install root for full-runtime installs. Set `${ARC_ROOT}` to that root and use `${ARC_ROOT}/...` for Arc bundle files such as `references/`, `disciplines/`, `agents/`, `templates/`, `scripts/`, and `rules/`. Project-local files stay relative to the user's repository. # Prune Orphaned Agents Run the cleanup script to kill orphaned Claude agent processes. ```bash ${ARC_ROOT}/scripts/cleanup-orphaned-agents.sh ``` This kills Claude Code processes that have become detached from their terminal (TTY shows "??"). These accumulate when the Task tool spawns subagents that don't cleanly exit after completion. **Safe to run anytime** — only kills orphaned processes. Active terminal sessions are preserved. After running, report the result to the user including how many processes were cleaned up. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/howells) — claim your Tome and manage your conversions.