use-cases/github-code-reviews.md Codex Docs, 2026-04-29 12:40 UTC → 2026-04-30 18:36 UTC

1# Review pull requests faster | Codex use cases1# Codex code review for GitHub pull requests | Codex use cases

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3Codex use cases3Codex use cases

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9Codex use case9Codex use case

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11# Review pull requests faster11# Codex code review for GitHub pull requests

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13Catch regressions and potential issues before human review.13Catch regressions and potential issues before human review.

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17Time horizon **5s**17Time horizon **5s**

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

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21## Best for21## Best for

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

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

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34Easy34Easy

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38Related links38Related links

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40[Use Codex in GitHub](https://developers.openai.com/codex/integrations/github) [Custom instructions with AGENTS.md](https://developers.openai.com/codex/guides/agents-md)40[Codex code review in GitHub](https://developers.openai.com/codex/integrations/github) [Custom instructions with AGENTS.md](https://developers.openai.com/codex/guides/agents-md)

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42## Best for42## Best for

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63## How to use63## How to use

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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.65Start by adding Codex code review to your GitHub organization or repository.

66See [Codex code review in GitHub](https://developers.openai.com/codex/integrations/github) for more details.

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67You can set up Codex to automatically review every pull request, or you can request a review with `@codex review` in a pull request comment.68You can set up Codex to automatically review every pull request, or you can request a review with `@codex review` in a pull request comment.

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71This will start a new cloud task that will fix the issue and update the pull request.72This will start a new cloud task that will fix the issue and update the pull request.

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73## Define additional guidance74## Define review guidance

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75To customize what Codex reviews, add or update a top-level `AGENTS.md` with a section like this:76To customize what Codex reviews, add or update a top-level `AGENTS.md` with a section like this:

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