Open Source
For the complete documentation index, see llms.txt. Markdown versions of documentation pages are available by appending
.mdto the page URL.
OpenAI develops key parts of Codex in the open. That work lives on GitHub so you can follow progress, report issues, and contribute improvements.
If you maintain a widely used open-source project or want to nominate maintainers stewarding important projects, you can also apply to the Codex for OSS program for API credits, ChatGPT Pro with Codex, and selective access to Codex Security.
Open-source components
| Component | Where to find | Notes |
|---|---|---|
| Codex CLI | openai/codex | The primary home for Codex open-source development |
| Codex SDK | openai/codex/codex-sdk | SDK sources live in the Codex repo |
| Codex Security CLI | openai/codex-security | CLI for finding and validating security vulnerabilities |
| Codex Security TypeScript SDK | openai/codex-security/sdk/typescript | TypeScript SDK for running Codex Security scans |
| Codex App Server | openai/codex/codex-rs/app-server | App-server sources live in the Codex repo |
| Skills | openai/skills | Reusable skills that extend ChatGPT and Codex |
| Plugins | openai/plugins | Reusable plugins for ChatGPT and Codex |
| IDE extension | - | Not open source |
| Codex cloud | - | Not open source |
| Universal cloud environment | openai/codex-universal | Base environment used by Codex cloud |
Where to report issues and request features
Use the appropriate GitHub repository for bug reports and feature requests:
- Codex bug reports and feature requests: openai/codex/issues
- Codex Security CLI and TypeScript SDK bug reports and feature requests: openai/codex-security/issues
- Discussion forum: openai/codex/discussions
When you file an issue, include which component you are using (CLI, SDK, IDE extension, Codex cloud, or Codex Security) and the version where possible.