2 2
3[← All use cases](https://developers.openai.com/codex/use-cases)3[← All use cases](https://developers.openai.com/codex/use-cases)
4 4
5Copy page [Export as PDF](https://developers.openai.com/codex/use-cases/codebase-onboarding/?export=pdf)
6
5Use Codex to map unfamiliar codebases, explain different modules and data flow, and point you to the next files worth reading before you edit.7Use Codex to map unfamiliar codebases, explain different modules and data flow, and point you to the next files worth reading before you edit.
6 8
7Easy9Easy
19 21
20## Starter prompt22## Starter prompt
21 23
24Explain how the request flows through <name of the system area> in the codebase.
25 Include:
26 - which modules own what
27 - where data is validated
28 - the top gotchas to watch for before making changes
29 End with the files I should read next.
30
22Explain how the request flows through <name of the system area> in the codebase.31Explain how the request flows through <name of the system area> in the codebase.
23 Include:32 Include:
24 - which modules own what33 - which modules own what
68 77
69Use Codex to turn a game brief into first a well-defined plan, and then a real browser-based...78Use Codex to turn a game brief into first a well-defined plan, and then a real browser-based...
70 79
7180Engineering Code](https://developers.openai.com/codex/use-cases/browser-games)[Engineering Code](https://developers.openai.com/codex/use-cases/browser-games)[
72 81
7382### Analyze datasets and ship reports### Learn a new concept
74 83
7584Use Codex to clean data, join sources, explore hypotheses, model results, and package the...Use Codex to study material such as research papers or courses, split the reading across...
76 85
7786Data Analysis](https://developers.openai.com/codex/use-cases/datasets-and-reports)Knowledge Work Data](https://developers.openai.com/codex/use-cases/learn-a-new-concept)