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Agent skill

Update Codex

by am-will in am-will/codex-app

A skill your agent uses when updating this codex-app Linux port from the latest upstream Codex Mac DMG, preserving local Linux patches, installing the refreshed desktop app, and publishing the…

No licenceAuto-check passed

Install Update Codex

skills CLI
$ npx skills add am-will/codex-app --skill update-codex -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install am-will/codex-app update-codex --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/am-will/codex-app.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.codex/skills/update-codex .claude/skills/update-codex && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
update-codex
GitHub stars
171
Token cost
~1.8k tokens
SKILL.md length
704 words
Files
1
Skills in repo
1
Repo updated
First seen
Licence
None found

At a glance

A skill your agent uses when updating this codex-app Linux port from the latest upstream Codex Mac DMG, preserving local Linux patches, installing the refreshed desktop app, and publishing the…

  • Works in 6 steps: Download and verify → Refresh recovered bundle → Verify patch preservation → …
  • Updating this codex-app Linux port from the latest upstream Codex Mac DMG
  • SKILL.md covers Contract, Workflow and Notes
  • Calls npm, node and codex; reaches persistent.oaistatic.com

What it does

Update Codex is an agent skill from am-will/codex-app. Use when updating this codex-app Linux port from the latest upstream Codex Mac DMG, preserving local Linux patches, installing the refreshed desktop app, and publishing the tag-driven Linux release artifacts.

Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It works with Linux. The repository describes itself as: Codex desktop reconstruction workspace and Electron starter.

When your agent uses it

  • Updating this codex-app Linux port from the latest upstream Codex Mac DMG
  • Preserving local Linux patches
  • Installing the refreshed desktop app
  • Publishing the tag-driven Linux release artifacts

Example prompts

  • “/update-codex”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Download and verify
  2. Refresh recovered bundle
  3. Verify patch preservation
  4. Build and install
  5. Verify installed app
  6. Release when requested

What it can do on your machine

Read from SKILL.md and the folder at commit 50ab2a6. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • npm
    • node
    • codex

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • persistent.oaistatic.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Update Codex loads about 1.8k tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 704 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~55
When it runs · the whole SKILL.md, loaded when a task matches
~1.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 704 words (~1,789 tokens).

“Use this skill only from /home/amwill/Applications/codex-app.”

— opening of SKILL.md by am-will
name
update-codex

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .codex/skills/update-codex of am-will/codex-app.

Open the folder on GitHubat commit 50ab2a6

Compare with similar skills

Update Codex next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Update Codex compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Update Codex this skillam-will/codex-app171—~1.8kAutomated safety check: PassNone
Configuring Horizoncoollabsio/coolify63k4 repos~898Automated safety check: PassMIT
K8s Security PoliciesCybereason-Public/owLSM28011 repos~2kAutomated safety check: PassGPL-2.0
Apple Container Test RunnerRustPython/RustPython22k—~467Automated safety check: PassMIT
Update .NET OS Packagesdotnet/core22k—~2.3kAutomated safety check: PassMIT
Cut Releasejfernandez/bpftop2.7k—~2kAutomated safety check: PassApache-2.0

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  • Configuring Horizon

    coollabsio/coolify

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    63k GitHub starsUsed in 4 repos~898 tokens
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  • K8s Security Policies

    Cybereason-Public/owLSM

    Comprehensive guide for implementing NetworkPolicy, PodSecurityPolicy, RBAC, and Pod Security Standards in Kubernetes.

    280 GitHub starsUsed in 11 repos~2k tokens
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  • Apple Container Test Runner

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    Runs RustPython tests inside a Linux container built with Apple's container CLI, so macOS users can compare Linux results with their local ones.

    22k GitHub stars~467 tokensUpdated today
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  • Update .NET OS Packages

    dotnet/core

    Official

    Audits and updates os-packages.json files listing the Linux packages each .NET release needs per distro, then regenerates the Markdown from the JSON.

    22k GitHub stars~2.3k tokensUpdated 2 days ago
    DevelopmentAuto-check passed

  • Cut Release

    jfernandez/bpftop

    Cut a new versioned release of bpftop — pick the version, open a version-bump PR, sign-tag the merge commit on main, and draft GitHub release notes in the project's established format.

    2.7k GitHub stars~2k tokensUpdated 1 mo ago
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  • Native Feel Cross Platform Desktop

    yetone/native-feel-skill

    A skill your agent uses when the user is designing, prototyping, or rewriting a desktop app that must run on multiple OSes (macOS + Windows, optionally Linux) AND feel indistinguishable from a…

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Works with

Questions about Update Codex

What does Update Codex do?

A skill your agent uses when updating this codex-app Linux port from the latest upstream Codex Mac DMG, preserving local Linux patches, installing the refreshed desktop app, and publishing the…. Update Codex is an agent skill from am-will/codex-app. Use when updating this codex-app Linux port from the latest upstream Codex Mac DMG, preserving local Linux patches, installing the refreshed desktop app, and publishing the tag-driven Linux release artifacts.

When should I use Update Codex?

Update Codex fits situations like: updating this codex-app Linux port from the latest upstream Codex Mac DMG; preserving local Linux patches; installing the refreshed desktop app; publishing the tag-driven Linux release artifacts.

How do I install Update Codex in Claude Code?

Run `npx skills add am-will/codex-app --skill update-codex -a claude-code`. Or copy the skill folder (.codex/skills/update-codex in am-will/codex-app) into .claude/skills/update-codex in your project. Claude Code loads it when a task matches its description.

How do I install Update Codex in Codex?

Run `npx skills add am-will/codex-app --skill update-codex -a codex`. Or copy the skill folder (.codex/skills/update-codex in am-will/codex-app) into .agents/skills/update-codex in your project. Codex loads it when a task matches its description.

Can I use Update Codex in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add am-will/codex-app --skill update-codex -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/update-codex, .gemini/skills/update-codex, .github/skills/update-codex and .opencode/skills/update-codex in your project.

What does Update Codex need to run?

Going by SKILL.md and its folder, Update Codex needs the command-line tools its instructions call (npm, node and codex).

Does Update Codex access the network?

SKILL.md names 1 domain. In commands or code: persistent.oaistatic.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Update Codex safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Update Codex use?

No licence was found for Update Codex or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Update Codex use?

About 1.8k tokens (SKILL.md is roughly 7.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Update Codex?

Skills that share tags, products or a category with Update Codex: Configuring Horizon (coollabsio/coolify, 63k stars), K8s Security Policies (Cybereason-Public/owLSM, 280 stars), Apple Container Test Runner (RustPython/RustPython, 22k stars) and Update .NET OS Packages (dotnet/core, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Update Codex?

am-will (a GitHub user) maintains it in am-will/codex-app, which has 171 GitHub stars. The repository was last updated on August 13, 2026.

Source: am-will/codex-app on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.