use-cases/github-code-reviews.md Codex Docs, 2026-04-12 06:38 UTC → 2026-04-25 06:37 UTC

1# Review pull requests faster | Codex use cases1# Review pull requests faster | Codex use cases

2 2 

3Codex use cases

4 

5![](/assets/OpenAI-black-wordmark.svg)

6 

7![Codex](/assets/OAI_Codex-Lockup_Fallback_Black.svg)

8 

9Codex use case

10 

11# Review pull requests faster

12 

13Catch regressions and potential issues before human review.

14 

15Difficulty **Easy**

16 

17Time horizon **5s**

18 

19Use Codex in GitHub to automatically surface regressions, missing tests, and documentation issues directly on a pull request.

20 

21## Best for

22 

23 - Teams that want another review signal before human merge approval

24 - Large codebases for projects in production

25 

26# Contents

27 

3[← All use cases](https://developers.openai.com/codex/use-cases)28[← All use cases](https://developers.openai.com/codex/use-cases)

4 29 

30Copy page [Export as PDF](https://developers.openai.com/codex/use-cases/github-code-reviews/?export=pdf)

31 

5Use Codex in GitHub to automatically surface regressions, missing tests, and documentation issues directly on a pull request.32Use Codex in GitHub to automatically surface regressions, missing tests, and documentation issues directly on a pull request.

6 33 

7Easy34Easy

23 50 

24 Focus the review on risky surfaces such as secrets, auth, and dependency changes.51 Focus the review on risky surfaces such as secrets, auth, and dependency changes.

25 52 

53| Skill | Why use it |

54| --- | --- |

55| [Security Best Practices](https://github.com/openai/skills/tree/main/skills/.curated/security-best-practices) | Focus the review on risky surfaces such as secrets, auth, and dependency changes. |

56 

26## Starter prompt57## Starter prompt

27 58 

28@codex review for security regressions, missing tests, and risky behavior changes.59@codex review for security regressions, missing tests, and risky behavior changes.

29 60 

61@codex review for security regressions, missing tests, and risky behavior changes.

62 

30## How to use63## How to use

31 64 

32Start by adding Codex code review to your GitHub organization or repository. See [Use Codex in GitHub](https://developers.openai.com/codex/integrations/github) for more details.65Start by adding Codex code review to your GitHub organization or repository. See [Use Codex in GitHub](https://developers.openai.com/codex/integrations/github) for more details.

54 87 

55## Related use cases88## Related use cases

56 89 

57[![](/images/codex/codex-wallpaper-1.webp)90[![](/images/codex/codex-wallpaper-2.webp)

58 91 

59### Bring your app to ChatGPT92### Deploy an app or website

60 93 

61Build one narrow ChatGPT app outcome end to end: define the tools, scaffold the MCP server...94Use Codex with Build Web Apps and Vercel to turn a repo, screenshot, design, or rough app...

62 95 

63Integrations Code](https://developers.openai.com/codex/use-cases/chatgpt-apps)[![](/images/codex/codex-wallpaper-2.webp)96Front-end Integrations](https://developers.openai.com/codex/use-cases/deploy-app-or-website)[![](/images/codex/codex-wallpaper-1.webp)

64 97 

65### Coordinate new-hire onboarding98### Bring your app to ChatGPT

66 99 

67Use Codex to gather approved new-hire context, stage tracker updates, draft team-by-team...100Build one narrow ChatGPT app outcome end to end: define the tools, scaffold the MCP server...

68 101 

69Integrations Data](https://developers.openai.com/codex/use-cases/new-hire-onboarding)[![](/images/codex/codex-wallpaper-2.webp)102Integrations Code](https://developers.openai.com/codex/use-cases/chatgpt-apps)[![](/images/codex/codex-wallpaper-1.webp)

70 103 

71### Create a CLI Codex can use104### Complete tasks from messages

72 105 

73Ask Codex to create a composable CLI it can run from any folder, combine with repo scripts...106Use Computer Use to read one Messages thread, complete the task, and draft a reply.

74 107 

75Engineering Code](https://developers.openai.com/codex/use-cases/agent-friendly-clis)108Knowledge Work Integrations](https://developers.openai.com/codex/use-cases/complete-tasks-from-messages)