Step 01
How to use OpenAI Codex for the right task
Chat, Work and Codex are not interchangeable. Begin with the place where the source of truth lives and the evidence the finished task must produce.
| If the source of truth is… | Start with… | Finish with… |
|---|---|---|
| code, tests and repository files | Codex | a diff, tests and review evidence |
| connected business knowledge and files | ChatGPT Work | a document, spreadsheet, presentation or report |
| a question, brainstorm or quick draft | Chat | an answer or first draft |
Do this now
- 1.Name the source of truth for one live task.
- 2.Name the final artifact and the permission boundary.
- 3.Pick the smallest surface that can finish it.
Realistic example
The broken resource renderer
The source of truth is this React/TypeScript repository; success requires a rendered access page, a diff and build evidence. That makes it a Codex task, not a Work task.
Expected output: A read-only inspection plan before edits.
Copyable prompt
Act as a work-surface selector. Do not change anything.
Task: [one real task]
Source of truth: [repo / files / connected knowledge / web]
Finished artifact: [diff / report / decision / other]
Permission boundary: [read-only / draft only / approved write]
Return exactly:
1. Recommended surface: Chat, ChatGPT Work or Codex
2. Why this source and artifact require it
3. First safe action
4. Files, tools or sources to inspect
5. Proof that would let a reviewer accept the result
6. One assumption that could change the recommendationVerification or handoff
Write down why this surface is correct. If the next step needs a git diff, shell command, test run or repository edit, move it to Codex.