Agent Hygiene

Agent Hygiene

Invocation Policy

This skill must stay explicit-only. Keep agents/openai.yaml with policy.allow_implicit_invocation: false so the skill is not injected into normal sessions by default.

Do not edit, disable, unlink, uninstall, or remove anything during the audit unless the user explicitly asks for a follow-up cleanup step.

Scope

Audit the user's local coding-agent setup and recommend how to reduce context noise and tool-selection ambiguity.

Focus on:

• Installed skills across Codex and common shared skill directories
• Codex plugins and MCP servers
• Duplicate or overlapping skills
• Skills installed globally that should be project-local
• Broad mandatory skills that may trigger too often
• Explicit skill mentions and tool-call signals in recent Codex sessions
• Skills with no visible recent use

Treat usage data as a signal, not proof. Implicit skill triggering may not be visible in logs, and old sessions may be compacted or absent.

Workflow

1. Ask a clarifying question only if the user wants a non-default scope. Default to the last 30 days and the current machine.
2. Run the bundled audit script from the skill directory:

python3 /path/to/agent-hygiene/scripts/audit_agent_hygiene.py --days 30

1. Inspect the script output. Read specific SKILL.md files only when needed to verify broad descriptions, overlap, or agent-specific instructions.
2. Produce recommendations. Do not run uninstall commands.

Recommendation Rubric

Use these categories:

• Keep: recently used, narrow trigger, high-value workflow, or installed as part of an enabled plugin the user actively uses.
• Move project-local: useful only in one repo or team context.
• Make explicit-only: rare, broad, expensive, or potentially disruptive but still useful on demand.
• Rewrite: useful skill with vague, overlapping, or "always/mandatory" trigger wording.
• Remove: duplicate, stale, wrong-agent install, broken path, or no credible recent use.
• Investigate: usage evidence is too thin to recommend confidently.

Prefer pruning global auto-triggerable skills before plugin or system skills. For plugin-provided skills, recommend disabling/removing the plugin only when the whole plugin appears unused.

Output

Return a concise audit:

• Summary: counts and main risk.
• Recommendations: grouped by action, with evidence.
• Notes: limitations of the usage evidence.
• Next command: one safe command to inspect or verify, not a destructive cleanup command.

Be direct. The goal is a smaller, higher-signal agent setup, not a complete inventory dump.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: yltw27
• Source: yltw27/agent-hygiene
• License: MIT

Install and usage instructions live in the source repository linked above.