openai-codex
Teaches developers how to use OpenAI Codex, a tool that writes and reviews code automatically.
Installation
Paste this into Claude Code, Cursor, or any agent that can run commands.
What this skill does
What it does:
- Provides complete documentation for OpenAI Codex, a different AI coding assistant made by OpenAI
- Explains how to install and use Codex from the command line, in code editors, or in the cloud
- Covers how to configure Codex with rules, settings, and custom behaviors
- Describes security features like sandboxes and approval systems
- Includes guides for team administration, scanning code for vulnerabilities, and connecting to GitHub
- Explains how to record and replay coding sessions
When to use it:
- When setting up OpenAI Codex for coding assistance
- When configuring Codex rules and custom behaviors for your team
- When you need security scanning or vulnerability detection
- When managing Codex for multiple users in an organization
- When connecting Codex to GitHub, Linear, or Slack for team workflows
SKILL.mdShow the author's original SKILL.md (not in English)
---
name: openai-codex
description: >
OpenAI Codex (CLI / IDE / cloud / ChatGPT desktop app) リファレンス。
GPT-6 系, Fast / Ultrafast mode, codex exec, スラッシュコマンド, prompting, AGENTS.md, rules, subagents,
approvals, auto-review, sandbox, permission profiles, profiles, config.toml, 環境変数, roles, MCP 設定,
GitHub Action, Codex SDK, App Server (JSON-RPC), Agents SDK 連携, Codex skills (.agents/skills), plugins,
scheduled tasks, Browser, Computer Use, cloud / local / worktree 環境, git worktrees, Record & Replay, cloud 委譲,
GitHub / GitLab / Linear / Slack 連携, administration, provisioning, analytics API, compliance API, LLM gateway,
Codex Security 脆弱性スキャン (SARIF), deep scan, triage, findings, threat model, security hardening。
user-invocable: false
---
# openai-codex
OpenAI Codex — `codex` CLI / IDE 拡張 / ChatGPT desktop app(公式表記は Codex in the ChatGPT desktop app)/ cloud からなる OpenAI 公式のコーディングエージェント製品。
対象は learn.chatgpt.com/docs の取得日 2026-10-16 時点(URL に版なし。対象モデル世代は GPT-6 系: gpt-6-astra / gpt-6.1-sol / gpt-6-sol / gpt-6-luna)。
CLI・IDE・desktop app・cloud への導入、CLI / IDE / desktop app のコマンドと設定、AGENTS.md/rules/subagents/memories によるエージェント設定、
Fast / Ultrafast mode、config.toml/MCP 設定、approvals・sandbox・GitHub Action・Codex SDK・App Server による自動化、
plugins・Codex skills 作成・scheduled tasks・Browser・Computer Use・web search による拡張、
ワークスペース administration(LLM gateway・service accounts・Agent Security 含む)、
Codex Security による脆弱性スキャン・修復、cloud/local/worktree 環境の切り替えと Record & Replay、
GitHub・GitLab・Linear・Slack との連携・code review をカバーする。
`codex mcp-server` は削除済みで、App Server(JSON-RPC)が後継。`references/security-automation/agents-sdk-mcp-server.md` は `codex mcp-server` 削除と App Server への移行手順をまとめたページ(旧 Agents SDK 連携例はサポート終了)。
本スキルは OpenAI Codex の公式ドキュメントを蒸留したものであり、本リポジトリが対象とする Claude Code の
`.claude/` 体系とは別物である。`AGENTS.md` / `rules` / `subagents` など用語が重なる箇所があるが、
設定ファイルの形式・置き場所・意味は Claude Code の `CLAUDE.md` / `.claude/rules/` / `.claude/agents/` と互換性がない
(AGENTS.md・rules・subagents の詳細は `references/agent-configuration/README.md` の索引から各ページを参照)。
## ディレクトリ構成
```text
skills/openai-codex/
SKILL.md
references/
getting-started/
README.md
cli.md
cli-customization.md
ide.md
desktop-app.md
windows-app.md
linux-app.md
cloud.md
cloud-internet-access.md
remote.md
remote-connections.md
models.md
model-selection.md
codex-micro.md
best-practices.md
troubleshooting.md
commands/
README.md
cli-global-flags.md
cli-subcommands.md
cli-slash-commands.md
ide-commands.md
ide-slash-commands.md
ide-settings.md
app-commands.md
app-settings.md
agent-configuration/
README.md
agents-md.md
rules.md
hooks.md
speed.md
subagents.md
prompting.md
memories.md
import.md
config/
README.md
config-basics.md
config-advanced.md
config-reference.md
config-sample.md
environment-variables.md
mcp-config.md
amazon-bedrock.md
security-automation/
README.md
agent-approvals-security.md
sandbox.md
permission-profiles.md
permission-modes.md
auto-review.md
windows-sandbox.md
windows-wsl.md
non-interactive-mode.md
github-action.md
codex-sdk.md
app-server.md
agents-sdk-mcp-server.md
administration/
README.md
administration.md
admin-rollout-guide.md
work-admin-faq.md
usage-limits.md
groups-and-provisioning.md
roles-and-workspace-permissions.md
access-tokens.md
service-accounts.md
analytics-api.md
compliance-api.md
governance.md
agent-security.md
workspace-analytics.md
workspace-model-availability.md
plugin-controls.md
plugin-management.md
skill-controls.md
managed-configuration.md
manage-app-updates.md
windows-deployment.md
authentication.md
connect-to-a-gateway.md
roll-out-a-gateway.md
gateway-compatibility.md
sign-in-with-chatgpt-through-a-gateway.md
bedrock-through-litellm.md
security/
README.md
overview.md
cloud-setup.md
cloud-faq.md
threat-model.md
plugin-quickstart.md
workbench.md
scans.md
deep-scans.md
code-changes.md
security-review.md
triage-backlog.md
fix-findings.md
export-findings.md
vulnerability-reports.md
security-hardening.md
plugin-changelog.md
cli-quickstart.md
cli-reference.md
cli-faq.md
cli-bulk-scans.md
cli-ci.md
cli-ci-gitlab.md
sdk.md
environments/
README.md
cloud-environments.md
cloud-environment.md
git-worktrees.md
local-environment.md
modes.md
extend/
README.md
plugins.md
build-skills.md
automations.md
browser.md
computer-use.md
web-search.md
record-and-replay.md
third-party/
README.md
github.md
gitlab.md
code-review.md
linear.md
slack.md
samples/
README.md
follow-goals.md
github-code-reviews.md
codebase-onboarding.md
automation-bug-triage.md
slack-coding-tasks.md
reusable-codex-skills.md
refactor-your-codebase.md
code-migrations.md
update-documentation.md
agent-friendly-clis.md
verified-operations-workflows.md
ai-app-evals.md
scan-code-changes-for-security.md
deep-security-scan.md
remediate-vulnerability-backlog.md
dependency-incident-audits.md
ios-simulator-bug-debugging.md
scripts/
README.md
install.md
auth.md
cli-basics.md
automation.md
config.md
```
## 探索手順
タスクからカテゴリを引き、カテゴリの README.md で目的のページを特定する:
1. 下記マッピング表でタスクに対応するカテゴリを探す
2. そのカテゴリの `references/{category}/README.md` を参照して目的のページを特定する
3. 該当ページの `.md` を Read して詳細を確認する
## タスク → カテゴリ マッピング
| タスク | カテゴリ | 参照 README |
|--------|---------|------------|
| Codex CLI / IDE 拡張 / desktop app / cloud の導入・違いを知りたい | getting-started | [references/getting-started/README.md](references/getting-started/README.md) |
| CLI の出力・エイリアスをカスタマイズしたい、desktop app(Windows / Linux)・リモート接続から使いたい | getting-started | [references/getting-started/README.md](references/getting-started/README.md) |
| モデル選択(GPT-6 系・Codex Micro 含む)・reasoning effort・ベストプラクティス・トラブルシュートを知りたい | getting-started | [references/getting-started/README.md](references/getting-started/README.md) |
| CLI のフラグ・サブコマンド・スラッシュコマンド、IDE / desktop app のコマンドと設定を引きたい | commands | [references/commands/README.md](references/commands/README.md) |
| AGENTS.md / prompting / subagents / memories ワークフローを設定したい | agent-configuration | [references/agent-configuration/README.md](references/agent-configuration/README.md) |
| サンドボックス外で実行するコマンドを rules(`.rules` / Starlark `prefix_rule`)で許可したい、hooks でエージェントのライフサイクルにフックしたい | agent-configuration | [references/agent-configuration/README.md](references/agent-configuration/README.md) |
| Fast / Ultrafast mode で速度を切り替えたい、Claude Code / Cursor の設定を取り込みたい(import) | agent-configuration | [references/agent-configuration/README.md](references/agent-configuration/README.md) |
| config.toml のキー・プロファイル・MCP サーバー設定、Amazon Bedrock 経由の利用を知りたい | config | [references/config/README.md](references/config/README.md) |
| 環境変数の一覧を知りたい | config | [references/config/README.md](references/config/README.md) |
| approvals / sandbox / permission profiles / permission modes を設計したい | security-automation | [references/security-automation/README.md](references/security-automation/README.md) |
| codex exec を CI/GitHub Action/Codex SDK から自動実行したい、Windows/WSL 上のサンドボックスを設定したい | security-automation | [references/security-automation/README.md](references/security-automation/README.md) |
| App Server でカスタムクライアントを作りたい(旧 MCP server からの移行) | security-automation | [references/security-automation/README.md](references/security-automation/README.md) |
| ワークスペースの roles / provisioning / analytics / compliance を管理したい | administration | [references/administration/README.md](references/administration/README.md) |
| Enterprise ロールアウト・アクセストークン運用を知りたい | administration | [references/administration/README.md](references/administration/README.md) |
| LLM gateway 経由の利用・service accounts・Agent Security・plugin 管理を設定したい | administration | [references/administration/README.md](references/administration/README.md) |
| リポジトリの脆弱性スキャン・トリアージ・修復(Codex Security)を行いたい、PR/差分のセキュリティレビューをしたい | security | [references/security/README.md](references/security/README.md) |
| 検出結果の SARIF/CSV/JSON エクスポート・CI(GitLab 含む)連携・threat model 調整をしたい | security | [references/security/README.md](references/security/README.md) |
| Cloud / Local / Worktree 環境の設定・切り替え、git worktree でチャットを分離したい | environments | [references/environments/README.md](references/environments/README.md) |
| 新 Cloud environments と Legacy の違いを知りたい | environments | [references/environments/README.md](references/environments/README.md) |
| plugins・Codex skills 作成(.agents/skills)・scheduled tasks(automations)・Browser・Computer Use・web search を使いたい | extend | [references/extend/README.md](references/extend/README.md) |
| ワークフローを録画してスキル化したい(Record & Replay) | extend | [references/extend/README.md](references/extend/README.md) |
| GitHub / GitLab / Linear / Slack(ChatGPT in Slack)から Codex を呼び出したい | third-party | [references/third-party/README.md](references/third-party/README.md) |
| GitLab MR レビュー・code review 全般を設定したい | third-party | [references/third-party/README.md](references/third-party/README.md) |
| 典型的な使い方を知りたい | samples | [samples/README.md](samples/README.md) |
| インストール・CLI コマンドを知りたい | scripts | [scripts/README.md](scripts/README.md) |
Ships with 150 supporting files:
- references/administration/access-tokens.md
- references/administration/admin-rollout-guide.md
- references/administration/administration.md
- references/administration/agent-security.md
- references/administration/analytics-api.md
- references/administration/authentication.md
- references/administration/bedrock-through-litellm.md
- references/administration/compliance-api.md
- references/administration/connect-to-a-gateway.md
- references/administration/gateway-compatibility.md
- references/administration/governance.md
- references/administration/groups-and-provisioning.md
- references/administration/manage-app-updates.md
- references/administration/managed-configuration.md
- references/administration/plugin-controls.md
- references/administration/plugin-management.md
- references/administration/README.md
- references/administration/roles-and-workspace-permissions.md
- references/administration/roll-out-a-gateway.md
- references/administration/service-accounts.md
- … and 130 more
Mirrored from the author's public source. Install counts from the open skills registry.