Firzus Set up Codex
Install this skill's operating policy and the configuration keys that activate it. Leave model selection, authentication, permissions, MCP servers, and project instructions untouched.
1. Inspect
Resolve the target Codex home from CODEX_HOME, falling back to ~/.codex. Read its config.toml and instructions/codex-operating-policy.md when present.
Report whether the installer will create, update, or preserve each file. Call out existing values for model_instructions_file and model_verbosity because the installer will replace those two root keys.
Done when: the target paths and both current values are known or explicitly absent.
2. Install
Run the bundled PowerShell installer:
pwsh -File "<skill-directory>/scripts/setup-codex.ps1"
Pass -CodexHome <path> to target a different profile. The installer is idempotent and backs up changed files under <codex-home>/backups/ before writing them.
It installs these settings:
model_verbosity = "low"
model_instructions_file = "<codex-home>/instructions/codex-operating-policy.md"
It does not set model, model_reasoning_effort, or personality; Codex or the user retains those choices.
Done when: the installer reports that both files were installed or were already current, with no error.
3. Verify
Read the resulting files and check that:
- each managed key occurs once at the TOML root;
model_instructions_fileresolves to the installed prompt;- the installed prompt matches this skill's
codex-operating-policy.md; - every unrelated configuration entry remains present.
Start a new Codex task because an existing task keeps the instructions loaded when it started.
Done when: every check passes and the user has the backup path, or knows that no backup was needed.
Restore
Copy the latest timestamped backup over the corresponding file, or remove the two managed root keys and the installed prompt when the installation created them from scratch. Start a new Codex task after restoring.