use-cases/collections/production-systems.md +89 −0 added
1# Production systems
2
3The use cases in this collection are useful when Codex is working in a repo that already has history, tests, owners, and production constraints.
4Codex is particularly good at navigating complex codebases, including sprawling monorepos with lots of different services and dependencies.
5If you're working on a production system, get familiar with these use cases to understand how Codex can help you.
6
7## Start with a codebase tour
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9Use Codex to get familiar with a complex codebase, which is especially useful when onboarding onto a repo for production software.
10
11[
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13### Understand large codebases
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15Use Codex to map unfamiliar codebases, explain different modules and data flow, and point...
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17Engineering Analysis](https://developers.openai.com/codex/use-cases/codebase-onboarding)
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19## Modernize the codebase
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21Leverage Codex to plan tech stack migrations, upgrade your integration to the latest models if applicable, and refactor the codebase to improve readability and maintainability.
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23[
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25### Upgrade your API integration
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27Use Codex to update your existing OpenAI API integration to the latest recommended models...
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29Evaluation Engineering](https://developers.openai.com/codex/use-cases/api-integration-migrations)[
30
31### Refactor your codebase
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33Use Codex to remove dead code, untangle large files, collapse duplicated logic, and...
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35Engineering Code](https://developers.openai.com/codex/use-cases/refactor-your-codebase)[
36
37### Run code migrations
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39Use Codex to map a legacy system to a new stack, land the move in milestones, and validate...
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41Engineering Code](https://developers.openai.com/codex/use-cases/code-migrations)
42
43## Codify repeatable work
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45Ask Codex to turn repo-specific workflows or checklists into a skill, so that all repo contributors can benefit from a standardized process.
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47[
48
49### Save workflows as skills
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51Turn a working Codex thread, review rules, test commands, release checklists, design...
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53Engineering Workflow](https://developers.openai.com/codex/use-cases/reusable-codex-skills)
54
55## Maintain system health
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57Let Codex pick up feature requests and bug fixes automatically by using it from Slack and connecting it to your alerting, issue tracking, and daily bug sweeps.
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59[
60
61### Kick off coding tasks from Slack
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63Mention `@Codex` in Slack to start a task tied to the right repo and environment, then...
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65Integrations Workflow](https://developers.openai.com/codex/use-cases/slack-coding-tasks)[
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67### Automate bug triage
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69Ask Codex to check recent alerts, issues, failed checks, logs, and chat reports, tune the...
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71Automation Quality](https://developers.openai.com/codex/use-cases/automation-bug-triage)
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73## Avoid the review bottleneck
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75Use Codex to automatically review PRs and run focused QA passes on critical flows, so you can catch issues quickly and ship updates confidently.
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77[
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79### Codex code review for GitHub pull requests
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81Use Codex code review in GitHub to automatically surface regressions, missing tests, and...
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83Integrations Workflow](https://developers.openai.com/codex/use-cases/github-code-reviews)[
84
85### QA your app with Computer Use
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87Use Computer Use to exercise key flows, catch issues, and finish with a bug report.
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89Automation Quality](https://developers.openai.com/codex/use-cases/qa-your-app-with-computer-use)