openai / openai/codex

unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3559f9709be9814-SJC

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app bug CLI connectivity
Dominant language
Rust
Stars
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Forks
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PR merge metrics
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Description

What version of the Codex App are you using (From “About Codex” dialog)?

Codex CLI 0.153.0

What subscription do you have?

unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3559f9709be9814-SJC

What platform is your computer?

No response

What issue are you seeing?

unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3559f9709be9814-SJC

What steps can reproduce the bug?

unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3559f9709be9814-SJC

What is the expected behavior?

No response

Additional information

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the failure with Codex CLI 0.153.0 and inspect the request sent to https://chatgpt.com/backend-api/codex/responses. Check how the CLI builds or selects this endpoint and compare the response with the expected API behavior. Done means identifying the cause of the 404 and confirming the request succeeds or reports a useful, verified error.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
api, cli
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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