MCPInstall

openai-codex

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。

Installs
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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/fandhe-ai/agent-reference-skills --skill openai-codex
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads openai-codex automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

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

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-startedreferences/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-startedreferences/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-startedreferences/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commandsreferences/commands/README.md
AGENTS.md / prompting / subagents / memories ワークフローを設定したいagent-configurationreferences/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-configurationreferences/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-configurationreferences/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configreferences/config/README.md
環境変数の一覧を知りたいconfigreferences/config/README.md
approvals / sandbox / permission profiles / permission modes を設計したいsecurity-automationreferences/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-automationreferences/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-automationreferences/security-automation/README.md
ワークスペースの roles / provisioning / analytics / compliance を管理したいadministrationreferences/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administrationreferences/administration/README.md
LLM gateway 経由の利用・service accounts・Agent Security・plugin 管理を設定したいadministrationreferences/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securityreferences/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securityreferences/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environmentsreferences/environments/README.md
新 Cloud environments と Legacy の違いを知りたいenvironmentsreferences/environments/README.md
plugins・Codex skills 作成(.agents/skills)・scheduled tasks(automations)・Browser・Computer Use・web search を使いたいextendreferences/extend/README.md
ワークフローを録画してスキル化したい(Record & Replay)extendreferences/extend/README.md
GitHub / GitLab / Linear / Slack(ChatGPT in Slack)から Codex を呼び出したいthird-partyreferences/third-party/README.md
GitLab MR レビュー・code review 全般を設定したいthird-partyreferences/third-party/README.md
典型的な使い方を知りたいsamplessamples/README.md
インストール・CLI コマンドを知りたいscriptsscripts/README.md

FAQ

What does the openai-codex skill do?

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。

How do I install openai-codex?

Run npx skills add https://github.com/fandhe-ai/agent-reference-skills --skill openai-codex in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/openai-codex/ (personal) or .claude/skills/openai-codex/ (project).

Which AI agents can use openai-codex?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is openai-codex safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains openai-codex?

It is published by fandhe-ai in fandhe-ai/agent-reference-skills. It has 344 recorded installs.

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