Cmd. /experimental
Toggle experimental Codex features from the TUI.
Key takeaways
/experimentalopens controls for optional Codex features, and some changes may require a restart.- Enable goals here (gated by
features.goals) before trying/goal, and check whether a feature is hidden by config or policy. - Treat experimental toggles as version-sensitive; surfaces like Code Mode and hooks appeared in earlier release notes.
- Do not put experimental behavior into team standards without a version and rollback note.
Original Command Declaration
/experimentalOfficial Summary
/experimental opens controls for optional Codex features. Some changes may require a restart.
Usage
/experimentalGood Examples
- Enable goals with
/experimentalbefore trying/goal. - Inspect experimental toggles during onboarding so team docs match actual feature flags.
Similar Commands
| Command | Difference | Choose It When |
|---|---|---|
/experimental | Toggles optional features | You need to enable or inspect feature gates |
/debug-config | Shows config layers | You need to understand why a flag is active |
/status | Shows session state | You need runtime confirmation |
Use Cases
- Enabling experimental subagents, apps, or goals where supported.
- Checking whether a feature is hidden because of config or policy.
- Keeping team playbooks honest about feature maturity.
Recent Changes
- Code Mode and hook-related experimental surfaces appeared in earlier release notes.
- Goals are feature-gated with
features.goals.
Cautions
- Treat experimental toggles as version-sensitive.
- Do not put experimental behavior into team standards without a version and rollback note.
Release Basis
- Judgment: confirmed addition
- First evidence version:
rust-v0.74.0 - Date (UTC): 2025-12-18
- Release link: https://github.com/openai/codex/releases/tag/rust-v0.74.0
Sources
- Codex slash commands: https://developers.openai.com/codex/cli/slash-commands
- Codex CLI features: https://developers.openai.com/codex/cli/features