OpenAI develops key parts of Codex in the open. That work lives on GitHub so you can follow progress, report issues, and contribute improvements.
Open-source components
| Component | Where to find | Notes |
|---|---|---|
| Codex CLI | openai/codex | The primary home for Codex open-source development |
| Codex SDK | openai/codex/sdk | SDK sources live in the Codex repo |
| Skills | openai/skills | Reusable skills that extend Codex |
| IDE extension | - | Not open source |
| Codex web | - | Not open source |
| Universal cloud environment | openai/codex-universal | Base environment used by Codex cloud |
Where to report issues and request features
Use the Codex GitHub repository for bug reports and feature requests across Codex components:
- Bug reports and feature requests: openai/codex/issues
- Discussion forum: openai/codex/discussions
When you file an issue, include which component you are using (CLI, SDK, Skills, IDE extension, Codex web, or Codex cloud) and the version where possible.