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Delegate coding tasks to OpenAI Codex CLI
Passed 21 of 21 test cases with the skill, and 14 of 21 without it.
and 4 more in the full report
7 fixed15 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.
I want to analyze how the middleware in `src/app.ts` operates using the Codex CLI tool, but I need a query command that strictly operates in read-only mode so no source files are modified. What command should I type?
| Checked | Without skill | With skill |
|---|---|---|
| The response uses the --question flag. | Missed | Passed |
The instructions your model reads when the skill loads.
Delegate code generation, editing, and explanation tasks to the OpenAI Codex CLI. Codex CLI runs GPT-4o in an agentic coding loop with sandboxed code execution.
# Requires Node.js 18+
npm install -g @openai/codex
# Verify
codex --version
# Set API key
$env:OPENAI_API_KEY = "sk-..."
Set-Location "C:\Users\<you>\myproject"
codex "Add input validation to all form fields in the React components"
# Auto-approve all edits (use with caution)
codex --approval-mode auto-edit "Add JSDoc comments to all exported functions in src/"
test cases passed, vs 14 / 21 without
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