原文核对：2026-10-13 · 中文正文 · 英文提示词与演示
场景定位
让 Codex 梳理陌生代码库，解释各模块与数据流，并在你修改前指出下一步值得阅读的文件。
- 难度
- 入门
- 时间跨度
- 5 分钟
适合用于
- 刚加入仓库或服务的新工程师。
- 希望先理解功能如何工作，再进行修改的人。
起步提示词
英文原文 · 可复制后按实际材料修改
Explain how the request flows through <name of the system area> in the codebase.
Include:
- which modules own what
- where data is validated
- the top gotchas to watch for before making changes
End with the files I should read next.简介
刚接触仓库或陌生功能时，Codex 可以帮助你在改代码前建立认识。目标是梳理请求流、理解各模块职责，并找到值得继续阅读的文件，而不仅仅得到一份高层摘要。
使用方法
刚接触项目时，可以先让 Codex 解释整个代码库：
官方提示词
英文原文 · 可复制后按实际材料修改
Explain this repo to me如果要在现有代码库里增加功能，可以让 Codex 解释某个具体子系统。范围越清楚，说明越具体：
- 提供相关文件、目录或希望理解的功能范围。
- 要求追踪请求流，说明哪些模块负责业务逻辑、传输、持久化或 UI。
- 在编辑之前，询问验证、副作用和状态转换发生在哪里。
- 最后询问接下来应读哪些文件，以及哪些位置风险较高。
有用的入门说明应形成一张具体的结构图，而不是仅列出文件名。结束时，Codex 应已经解释主要流程、指出风险，并告诉你动手前还应阅读哪些文件或进行哪些检查。
下一步可以问什么
得到首次说明后，继续追问，直到内容足够具体，让你有把握进行第一处修改。好的追问通常会揭示假设、隐藏依赖，以及修改后需要执行的检查。
- 哪个模块负责真正的业务逻辑，哪些属于传输层或 UI 层？
- 验证发生在哪里，那里强制了哪些假设？
- 修改这条流程时，哪些关联文件或后台任务容易被忽略？
- 编辑这部分后应运行哪些测试或检查？
展开英文原文对照
Use Codex to map unfamiliar codebases, explain different modules and data flow, and point you to the next files worth reading before you edit.
Introduction
When you are new to a repo or dropped into an unfamiliar feature, Codex can help you get oriented before you start changing code. The goal is not just to get a high-level summary, but to map the request flow, understand which modules own what, and identify the next files worth reading.
How to use
If you’re new to a project, you can simply start by asking Codex to explain the whole codebase:
官方提示词
英文原文 · 可复制后按实际材料修改
Explain this repo to meIf you need to contribute a new feature to an existing codebase, you can ask codex to explain a specific system area. The better you scope the request, the more concrete the explanation will be:
- Give Codex the relevant files, directories, or feature area you are trying to understand.
- Ask it to trace the request flow and explain which modules own the business logic, transport, persistence, or UI.
- Ask where validation, side effects, or state transitions happen before you edit anything.
- End by asking which files you should read next and what the risky spots are.
A useful onboarding answer should leave you with a concrete map, not just a list of filenames. By the end, Codex should have explained the main flow, highlighted the risky parts, and pointed you to the next files or checks that matter before you start editing.
Questions to ask next
Once Codex gives you a first pass, keep going until the explanation is specific enough that you would trust yourself to make the first edit. Good follow-up questions usually force it to call out assumptions, hidden dependencies, and the checks that matter after a change.
- Which module owns the actual business logic versus the transport or UI layer?
- Where does validation happen, and what assumptions are enforced there?
- What related files or background jobs are easy to miss if I change this flow?
- Which tests or checks should I run after editing this area?