To enable auto-update, run /plugin, use the < / > arrow keys to navigate to the Marketplaces tab, select controlplane, and choose Enable auto-update. Otherwise update manually with /plugin marketplace update controlplane followed by /reload-plugins.
Start Codex, open /plugins, navigate to Control Plane, then install the cpln plugin.
Enable plugin hooks for guardrail injection (recommended). Codex ships with plugin_hooks off by default. Enable it in ~/.codex/config.toml so the plugin’s SessionStart hook can inject CLI conventions and guardrails:
[features]plugins = trueplugin_hooks = true
After restart, /plugins → Control Plane → Hooks should show SessionStart.
Codex does not auto-update plugin marketplaces. When a new release is published, run the upgrade command and restart Codex:
codex plugin marketplace upgrade controlplane
Install the extension from GitHub with auto-update enabled: