Installs into .claude/skills of the current project.
Are you the author of Codex Cli?
Add the live security badge to your README. It updates with every re-scan.
[](https://www.skillsdirectory.com/skills/colinmollenhour-codex-cli-dotfiles)
---
name: codex-cli
description: 'Shell out to codex CLI.'
allowed-tools: Bash(codex *)
---
# Codex CLI
Use the `codex` CLI to run one-shot prompts or diff-based reviews through OpenAI models.
## Prerequisites
`codex` must be installed and authenticated (`codex --version` should succeed).
## Sending a Prompt (`codex exec`)
```bash
codex exec --ephemeral "Your prompt here"
```
Key flags:
- `--ephemeral` — run without persisting a session; use for one-shot tasks.
- `-c model="<name>"` — override the model only when the user explicitly requests one.
Capture output to a file for aggregation:
```bash
codex exec --ephemeral "Prompt text" > .tmp/codex-output.txt 2>&1
```
## Code Review (`codex review`)
```bash
codex review --base <branch> > .tmp/codex-review.txt 2>&1
```
- `--base <branch>` — required; the branch to diff against.
- Does **not** support `--ephemeral`.
- Requires the sandbox to be disabled in Claude Code (`dangerouslyDisableSandbox: true`) because Codex writes session files during review runs.
## Caveats
- `codex review` writes session files to `~/.codex/`; run it unsandboxed from Claude Code.
- `codex exec` with `--ephemeral` is generally safe inside the sandbox for short prompts.
- If `codex` reports authentication errors, ask the user to re-authenticate (`codex login`).
