quickstart.md Codex Docs, 2026-03-03 00:35 UTC → 2026-03-13 00:34 UTC

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151. Download and install the Codex app151. Download and install the Codex app

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17 The Codex app is currently only available for macOS.17 Download the Codex app for Windows or macOS.

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19 [Download for macOS](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)19 [Download for macOS](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)

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21 [Get notified for Windows and Linux](https://openai.com/form/codex-app/)21 [Get notified for Linux](https://openai.com/form/codex-app/)

222. Open Codex and sign in222. Open Codex and sign in

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24 Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.24 Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.

41- Find and fix bugs in my codebase with minimal, high-confidence changes.40- Find and fix bugs in my codebase with minimal, high-confidence changes.

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43 If you need more inspiration, check out the [explore section](https://developers.openai.com/codex/explore).42 If you need more inspiration, check out the [explore section](https://developers.openai.com/codex/explore).

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

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45 [Learn more about the Codex app](https://developers.openai.com/codex/app)45 [Learn more about the Codex app](https://developers.openai.com/codex/app)

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694. Use Git checkpoints694. Use Git checkpoints

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71 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.71 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.

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

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73 [Learn more about the Codex IDE extension](https://developers.openai.com/codex/ide)74 [Learn more about the Codex IDE extension](https://developers.openai.com/codex/ide)

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1004. Use Git checkpoints1014. Use Git checkpoints

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102 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.103 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.

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

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104[Learn more about the Codex CLI](https://developers.openai.com/codex/cli)106[Learn more about the Codex CLI](https://developers.openai.com/codex/cli)

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