What is codex-skill-admin?

A tool for managing local Codex skills: checking their status, finding unused ones, disabling them without uninstalling, restoring them, and verifying the result.

Use it to list skills, audit rarely used skills, disable or restore skills, create backups during changes, and verify the local configuration.

It helps keep the available skill set smaller and easier to manage while preserving disabled skills for later restoration.

codex-skill-admin — Skill for Codex by zjp1997720/zhijian-skills

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add zjp1997720/zhijian-skills --skill codex-skill-admin

Clone the repo

git clone --depth 1 https://github.com/zjp1997720/zhijian-skills

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/zjp1997720/zhijian-skills/codex-skill-admin/github.svg)](https://agentmods.dev/skills/zjp1997720/zhijian-skills/codex-skill-admin)

Your own site

<a href="https://agentmods.dev/skills/zjp1997720/zhijian-skills/codex-skill-admin"><img src="https://agentmods.dev/badge/skills/zjp1997720/zhijian-skills/codex-skill-admin/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/zjp1997720/zhijian-skills/codex-skill-admin"><img src="https://agentmods.dev/badge/skills/zjp1997720/zhijian-skills/codex-skill-admin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,594 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00029	$0.01594
Opus 5.5	$0.00012	$0.00638
Sonnet 5.5	$0.00006	$0.00319
Haiku 4.5	$0.00003	$0.00159

Measured 29d ago against content hash 8599dd2cf377, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codex-skill-admin scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 29d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/codex_skill_admin.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

codex-skill-admin — 100% identical, 17 lines differ

skills/codex-skill-admin/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codex Skill Admin

Use Codex's official skill config API. Do not edit SKILL.md frontmatter to disable a skill, and do not uninstall plugins unless the user explicitly asks for uninstall.

Quick Start

Use the bundled script for normal work:

SKILL_DIR="${CODEX_SKILL_ADMIN_DIR:-$HOME/.agents/skills/codex-skill-admin}"
if [ ! -d "$SKILL_DIR" ]; then
  SKILL_DIR="${CODEX_HOME:-$HOME/.codex}/skills/codex-skill-admin"
fi
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" list --cwd "$PWD"
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" audit-unused --cwd "$PWD" --days 30
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" disable-unused --cwd "$PWD" --days 30
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" disable-unused --cwd "$PWD" --days 30 --apply
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" disable-unused --cwd "$PWD" --days 10 --max-uses 2
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" audit-unused --cwd "$PWD" --days 30 --exclude-session /path/to/session.jsonl
python3 "$SKILL_DIR/scripts/codex_skill_admin.py" verify --cwd "$PWD"

The script starts a temporary localhost codex app-server, calls:

skills/list
skills/config/write

It saves apply-mode backups under:

${CODEX_HOME:-$HOME/.codex}/backup/skill-disable-unused-YYYYMMDD-HHMMSS/

Workflow

Run list to get the current total, enabled, and disabled counts.
Run audit-unused --days 30 to inspect high-confidence recent usage.
Optionally add --max-uses N to include low-frequency skills. Example: --days 10 --max-uses 2 targets enabled skills used in at most 2 distinct recent session/source files.
Run disable-unused --days 30 without --apply and inspect the dry-run output.
If the user asked to close unused or low-frequency skills, run disable-unused --apply.
Verify with verify, or with list --force-reload plus prompt-count.
Report counts, backup path, threshold parameters, and any limits of the usage evidence.

System skills are preserved by default. Use --include-system only when the user explicitly asks to consider system skills too.

Read the full file on GitHub · 116 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

29d ago Changed · +7 lines · -45 tokens per session 8599dd2cf377
2mo ago First seen · 109 lines · 74 tokens per session scan A e4520dba0029

Subscribe to this mod's changes

codex-skill-admin is a skill published in the GitHub repository zjp1997720/zhijian-skills (787 stars, last pushed 4d ago), licensed MIT. It adds 29 tokens to every session and 1,594 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Building agents

codex-skill-admin next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
codex-skill-adminzjp1997720/zhijian-skills	Skill	787	4d ago	MIT	A	29	Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	today	MIT	A	103	Claude Code