app.md Codex Docs, 2026-04-17 00:44 UTC → 2026-05-05 23:00 UTC

4 4 

5ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex. Learn more about [what's included](https://developers.openai.com/codex/pricing).5ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex. Learn more about [what's included](https://developers.openai.com/codex/pricing).

6 6 

7![Codex app for Windows showing a project sidebar, active thread, and review pane](/images/codex/windows/codex-windows-light.webp)7<PlatformSpecificContent>

8 8 <CodexScreenshot

9![Codex app window with a project sidebar, active thread, and review pane](/images/codex/app/app-screenshot-light.webp)9 slot="windows"

10 alt="Codex app for Windows showing a project sidebar, active thread, and review pane"

11 lightSrc="/images/codex/windows/codex-windows-light.webp"

12 darkSrc="/images/codex/windows/codex-windows-dark.webp"

13 variant="no-wallpaper"

14 maxHeight="300px"

15 />

16 <CodexScreenshot

17 alt="Codex app window with a project sidebar, active thread, and review pane"

18 lightSrc="/images/codex/app/app-screenshot-light.webp"

19 darkSrc="/images/codex/app/app-screenshot-dark.webp"

20 variant="no-wallpaper"

21 maxHeight="300px"

22 />

23</PlatformSpecificContent>

10 24 

11## Getting started25## Getting started

12 26 

13The Codex app is available on macOS and Windows.27The Codex app is available on macOS and Windows.

14 28 

151. Download and install the Codex app29Most Codex app features are available on both platforms. Platform-specific

16 30exceptions are noted in the relevant docs.

17 Download the Codex app for Windows or macOS. Choose the Intel build if you’re using an Intel-based Mac.

18 31 

19 [Download for macOS (Apple Silicon)](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)[Download for macOS (Intel)](https://persistent.oaistatic.com/codex-app-prod/Codex-latest-x64.dmg)32<WorkflowSteps variant="headings">

331. Download and install the Codex app

20 34 

21 Need a different operating system?35 Download the Codex app for macOS or Windows. Choose the Intel build if you're using an Intel-based Mac.

22 36 

23 [Download for Windows](https://get.microsoft.com/installer/download/9PLM9XGG6VKS?cid=website_cta_psi)37 <CodexAppDownloadCta client:load className="mb-4" />

24 38 

39 <div class="text-sm">

25 [Get notified for Linux](https://openai.com/form/codex-app/)40 [Get notified for Linux](https://openai.com/form/codex-app/)

41 </div>

42 

262. Open Codex and sign in432. Open Codex and sign in

27 44 

28 Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.45 Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.

40 58 

41 You can ask Codex anything about the project or your computer in general. Here are some examples:59 You can ask Codex anything about the project or your computer in general. Here are some examples:

42 60 

43- Tell me about this project61 <ExampleGallery>

44- Build a classic Snake game in this repo.62 <ExampleTask

45- Find and fix bugs in my codebase with minimal, high-confidence changes.63 client:load

64 id="intro"

65 prompt="Tell me about this project"

66 iconName="brain"

67 />

68 <ExampleTask

69 client:load

70 id="snake-game"

71 shortDescription="Build a classic Snake game in this repo."

72 prompt={[

73 "Build a classic Snake game in this repo.",

74 "",

75 "Scope & constraints:",

76 "- Implement ONLY the classic Snake loop: grid movement, growing snake, food spawn, score, game-over, restart.",

77 "- Reuse existing project tooling/frameworks; do NOT add new dependencies unless truly required.",

78 "- Keep UI minimal and consistent with the repo’s existing styles (no new design systems, no extra animations).",

79 "",

80 "Implementation plan:",

81 "1) Inspect the repo to find the right place to add a small interactive game (existing pages/routes/components).",

82 "2) Implement game state (snake positions, direction, food, score, tick timer) with deterministic, testable logic.",

83 "3) Render: simple grid + snake + food; support keyboard controls (arrow keys/WASD) and on-screen controls if mobile is present in the repo.",

84 "4) Add basic tests for the core game logic (movement, collisions, growth, food placement) if the repo has a test runner.",

85 "",

86 "Deliverables:",

87 "- A small set of files/changes with clear names.",

88 "- Short run instructions (how to start dev server + where to navigate).",

89 "- A brief checklist of what to manually verify (controls, pause/restart, boundaries).",

90 ].join("\n")}

91 iconName="gamepad"

92 />

93 <ExampleTask

94 client:load

95 id="fix-bugs"

96 shortDescription="Find and fix bugs in my codebase with minimal, high-confidence changes."

97 prompt={[

98 "Find and fix bugs in my codebase with minimal, high-confidence changes.",

99 "",

100 "Method (grounded + disciplined):",

101 "1) Reproduce: run tests/lint/build (or follow the existing repo scripts). If I provided an error, reproduce that exact failure.",

102 "2) Localize: identify the smallest set of files/lines involved (stack traces, failing tests, logs).",

103 "3) Fix: implement the minimal change that resolves the issue without refactors or unrelated cleanup.",

104 "4) Prove: add/update a focused test (or a tight repro) that fails before and passes after.",

105 "",

106 "Constraints:",

107 "- Do NOT invent errors or pretend to run commands you cannot run.",

108 "- No scope drift: no new features, no UI embellishments, no style overhauls.",

109 "- If information is missing, state what you can confirm from the repo and what remains unknown.",

110 "",

111 "Output:",

112 "- Summary (3–6 sentences max): what was broken, why, and the fix.",

113 "- Then ≤5 bullets: What changed, Where (paths), Evidence (tests/logs), Risks, Next steps.",

114 ].join("\n")}

115 iconName="search"

116 />

117 </ExampleGallery>

46 118 

47 If you need more inspiration, explore [Codex use cases](https://developers.openai.com/codex/use-cases).119 If you need more inspiration, explore [Codex use cases](https://developers.openai.com/codex/use-cases).

48 If you're new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).120 If you're new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

49 121 

122</WorkflowSteps>

123 

50---124---

51 125 

52## Work with the Codex app126## Work with the Codex app

53 127 

54[### Multitask across projects128<BentoContainer class="mt-6">

129 <BentoContent href="/codex/app/features#multitask-across-projects">

130 

131### Multitask across projects

132 

133Run project threads side by side and switch between them quickly.

134 

135 </BentoContent>

136 <BentoContent href="/codex/app/worktrees">

137 

138### Worktrees

139 

140Keep parallel code changes isolated with built-in Git worktree support.

141 

142 </BentoContent>

143 <BentoContent href="/codex/app/computer-use">

144 

145### Computer use

146 

147Let Codex use macOS apps for GUI tasks, browser flows, and native app testing.

148 

149 </BentoContent>

150 <BentoContent href="/codex/app/review">

151 

152### Review and ship changes

153 

154Inspect diffs, address PR feedback, stage files, commit, and push.

155 

156 </BentoContent>

157 <BentoContent href="/codex/app/features#integrated-terminal">

158 

159### Terminal and actions

160 

161Run commands in each thread and launch repeatable project actions.

162 

163 </BentoContent>

164 <BentoContent href="/codex/app/browser">

165 

166### In-app browser

167 

168Open rendered pages, leave comments, or let Codex operate local browser flows.

169 

170 </BentoContent>

171 <BentoContent href="/codex/app/features#image-generation">

172 

173### Image generation

174 

175Generate or edit images in a thread while you work on the surrounding code and assets.

176 

177 </BentoContent>

178 <BentoContent href="/codex/app/automations">

179 

180### Automations

181 

182Schedule recurring tasks, or wake up the same thread for ongoing checks.

183 

184 </BentoContent>

185 <BentoContent href="/codex/app/features#skills-support">

55 186 

56Run project threads side by side and switch between them quickly.](https://developers.openai.com/codex/app/features#multitask-across-projects)[### Worktrees187### Skills

57 188 

58Keep parallel code changes isolated with built-in Git worktree support.](https://developers.openai.com/codex/app/worktrees)[### Computer use189Reuse instructions and workflows across the app, CLI, and IDE Extension.

59 190 

60Let Codex use macOS apps for GUI tasks, browser flows, and native app testing.](https://developers.openai.com/codex/app/computer-use)[### Review and ship changes191 </BentoContent>

192 <BentoContent href="/codex/app/features#richer-outputs-and-artifacts">

61 193 

62Inspect diffs, address PR feedback, stage files, commit, and push.](https://developers.openai.com/codex/app/review)[### Terminal and actions194### Sidebar and artifacts

63 195 

64Run commands in each thread and launch repeatable project actions.](https://developers.openai.com/codex/app/features#integrated-terminal)[### In-app browser196Follow plans, sources, task summaries, and generated file previews.

65 197 

66Open unauthenticated local or public pages and comment on rendered output.](https://developers.openai.com/codex/app/browser)[### Image generation198 </BentoContent>

199 <BentoContent href="/codex/plugins">

67 200 

68Generate or edit images in a thread while you work on the surrounding code and assets.](https://developers.openai.com/codex/app/features#image-generation)[### Automations201### Plugins

69 202 

70Schedule recurring tasks, or wake up the same thread for ongoing checks.](https://developers.openai.com/codex/app/automations)[### Skills203Connect apps, skills, and MCP servers to extend what Codex can do.

71 204 

72Reuse instructions and workflows across the app, CLI, and IDE Extension.](https://developers.openai.com/codex/app/features#skills-support)[### Sidebar and artifacts205 </BentoContent>

206 <BentoContent href="/codex/app/features#sync-with-the-ide-extension">

73 207 

74Follow plans, sources, task summaries, and generated file previews.](https://developers.openai.com/codex/app/features#richer-outputs-and-artifacts)[### Plugins208### IDE Extension sync

75 209 

76Connect apps, skills, and MCP servers to extend what Codex can do.](https://developers.openai.com/codex/plugins)[### IDE Extension sync210Share Auto Context and active threads across app and IDE sessions.

77 211 

78Share Auto Context and active threads across app and IDE sessions.](https://developers.openai.com/codex/app/features#sync-with-the-ide-extension)212 </BentoContent>

213</BentoContainer>

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80---215---

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