Does OpenAI Codex add any default commit-level metadata in Git workflows?

Codex Codex CLI
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Hello everyone,

I am analyzing AI-assisted code contributions and investigating whether OpenAI Codex leaves any identifiable footprint at the commit level such as commit author, metadata, trailers, or other markers.

For context, here’s what I observe with other tools:

  • Claude: Commits often include Co-authored-by: Claude <noreply@anthropic.com>.

  • Devin / Copilot: Commits are detectable via author/email metadata, not message content.

OpenAI Codex (Question)

Codex-associated commits in my dataset do not appear to include any commit-level attribution or metadata. I am curious about:

  1. Has Codex ever supported or planned to support optional authorship disclosure like Claude’s Co-authored-by?

  2. Are there any known signals such as commit templates, author/email conventions, or API metadata that could trace Codex usage?

Any pointers to documentation, design rationale, or prior discussions would be greatly appreciated.

Thank you!

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You may want to review the OpenAI Codex GitHub repository, in particular:

If no relevant issue exists, consider opening one. Be sure to check closed issues as well, since similar questions are often resolved there.

I briefly scanned the open issues using keywords such as git and message, but did not find any issue titles that appeared to address your specific question.

If you rely on Codex regularly, it is also worth checking these pages daily. Many AI command-line tools—across multiple vendors—are updated several times per day, often with multiple changes per release.