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Codex QA

Free

Isolate and verify your Codex plugin functionality safely.

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Free · Opens the source repo

What Codex QA does

Codex QA is a specialized skill designed for quality assurance of the omo Codex Light edition, ensuring that your plugin operates correctly without interfering with the user's existing setup. By utilizing an isolated CODEX_HOME and a local mock model, Codex QA allows developers to run tests and verifications without making any changes to the real ~/.codex. This isolation is crucial for maintaining a clean environment while testing plugin functionality, enabling developers to focus solely on their changes.

The skill comes with a suite of helper scripts, each equipped with a --self-test option to validate their functionality against the live machine. These scripts cover various QA scenarios, including proving that plugin hooks fire correctly during a live Codex session and verifying the installation of local builds. The use of a mock model ensures that no real API calls are made during testing, further safeguarding the user's environment.

Codex QA is particularly useful for developers working on the omo Codex plugin, as it provides the tools necessary for smoke-testing, debugging, and verifying changes. The skill is verified against codex-cli 0.140.0 and is designed to work seamlessly on macOS, making it a reliable choice for developers looking to ensure the quality and stability of their plugins. With clear guidance on setup and execution, Codex QA streamlines the testing process, allowing developers to capture evidence of their QA efforts effectively.

In summary, Codex QA is an essential tool for developers who want to ensure their Codex plugins are functioning correctly without risking their existing configurations. Its focus on isolation and thorough testing makes it a valuable addition to any developer's toolkit.

When to use it

Use Codex QA when making changes to the omo Codex plugin or when you need to verify plugin functionality in a safe environment.

When not to use it

Codex QA is not suitable for testing plugins in a live environment where real API calls are necessary or when working outside the specified setup requirements.

What you can build with it

Testing Plugin Changes

When you modify the omo Codex plugin, use Codex QA to ensure your changes work as intended without affecting the main installation.

Smoke Testing the TUI

If you need to verify that the Codex TUI boots and operates correctly, Codex QA provides scripts to perform smoke tests in an isolated environment.

Verifying Installation of Local Builds

Use Codex QA to confirm that a local build of your plugin installs correctly into an isolated `CODEX_HOME`, ensuring no impact on the user's setup.

How to install Codex QA

View source

1. Install with the skills CLI

npx skills add code-yeongyu/oh-my-openagent/codex-qa --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by code-yeongyu

Codex QA

QA the omo Codex Light edition (packages/omo-codex/, shipped as lazycodex). We exercise OUR plugin in a REAL Codex while touching nothing of the user's setup: an isolated CODEX_HOME + a local mock model means no real API call and the real ~/.codex is never read or written. Each helper script ships a --self-test that asserts its scenario against the live machine, so the scripts are both the QA tools and their own regression checks.

Verified against codex-cli 0.140.0 (node, jq, tmux, bun on macOS). Confirm with codex --version; check a flag with codex <cmd> --help.

Golden rules (read before running anything)

  • QA ONLY our plugin. Everything that spawns codex uses an isolated CODEX_HOME (created by cqa_mk_isolated_home) and a LOCAL mock model provider (cqa_start_mock). Never QA against the real ~/.codex, never hit a real model API. The bundled scripts enforce this; if you run codex by hand, export CODEX_HOME="$(mktemp -d)/codex"; mkdir -p "$CODEX_HOME" FIRST (a set CODEX_HOME must already exist or codex hard-errors).
  • Prove the real home stayed clean. Every script shasums ~/.codex/config.toml before and after and asserts it is unchanged. If you script by hand, do the same.
  • The interactive codex is a shell function that injects --profile quotio. Bash scripts bypass it and get the real binary; never rely on the interactive alias. See references/isolation.md.
  • The first-party way to prove a hook fired is the app-server notification stream (hook/started / hook/completed), not log scraping. See references/app-server.md.
  • The captured JSON / pane IS the evidence — write it under .omo/evidence/<YYYYMMDD>-<slug>/ (no evidence file == the QA did not happen).

Setup

cd <this-skill-dir>                        # .agents/skills/codex-qa
bash scripts/lib/common.sh --self-check    # confirm deps + isolation harness

Docker is the default QA surface. Run this QA inside a disposable container that has the latest codex and a copy of your config, with the host ~/.codex untouched: script/agent/qa-docker.sh (see references/docker-qa.md). The local scripts below are the fallback for when Docker is unavailable or on Windows.

Router: pick your case

You need to…RunDeep dive
Prove a plugin hook fires in a LIVE Codex turn (first-party)scripts/app-server-drive.sh --pluginapp-server.md
Prove the app-server driver itself works (no plugin, fast)scripts/app-server-drive.sh --self-testapp-server.md
Install the LOCAL build into an isolated home + assert it landedscripts/install-verify.sh --self-testinstall-verify.md
Pin ONE component's hook logic deterministically (no codex)scripts/hook-unit-probe.sh --self-testcomponents-hooks.md
Smoke the real TUI under tmux (boots, renders, survives)scripts/tui-smoke.sh --self-testlogging-debug.md
Watch runtime logs while QAing(see reference; RUST_LOG / logs DB / /debug-config)logging-debug.md

Scripts index (each is its own regression test)

Script--self-test asserts
scripts/lib/common.sh --self-checkdeps present; isolated CODEX_HOME is created inside a sandbox and auto-removed on exit; mock model serves the Responses SSE; real ~/.codex unchanged
scripts/app-server-drive.sh--self-test: a bare turn completes and the mock assistant text comes back. --plugin: installs local omo, drives a turn, and asserts hook/completed for sessionStart,userPromptSubmit
scripts/install-verify.shlocal omo installs into the isolated home; config.toml enables omo@sisyphuslabs; component bins + agent TOMLs linked in the sandbox; real ~/.codex unchanged
scripts/hook-unit-probe.shthe ultrawork component injects <ultrawork-mode> on an ulw UserPromptSubmit (also a manual --component/--event mode)
scripts/tui-smoke.shthe real codex TUI boots in the isolated home, renders, and survives (no early exit); captures the pane

When TUI visual QA evidence is needed, follow docs/reference/web-terminal-visual-qa.md: render the TUI through the real xterm.js web terminal - NEVER the tmux capture-pane frame, which degrades color and CJK width:

node script/qa/web-terminal-visual-qa.mjs --title "Codex TUI QA" \
  --command "codex" --input "{Enter}" \
  --evidence-dir .omo/evidence/<slug>/codex-web-terminal

The helper runs a real pty, renders it in xterm.js under Chrome, and writes terminal.txt, terminal-ansi.txt, terminal.png (true color), and metadata.json (--from-file <capture.ansi> replays a saved raw stream). Use that artifact set for TUI visual QA; use app-server-drive.sh --plugin for assertion-grade hook behavior.

Match QA to your change scope

  • Component / hook logic (packages/omo-codex/plugin/components/*): hook-unit-probe.sh for the exact stdout, THEN app-server-drive.sh --plugin to prove the live wiring. See components-hooks.md.
  • Installer / config.toml (packages/omo-codex/src/install/*): install-verify.sh.
  • Anything that affects a live session (hooks, agents, MCP wiring): app-server-drive.sh --plugin, and tui-smoke.sh --plugin if the TUI path matters.

Capturing evidence

ev=".omo/evidence/$(date +%Y%m%d)-codex-qa-<slug>"; mkdir -p "$ev"
bash scripts/app-server-drive.sh --plugin > "$ev/app-server-drive.json" 2>&1
bash scripts/install-verify.sh --self-test > "$ev/install-verify.txt" 2>&1

On /debugging

There is no /debugging command in Codex. To observe a run: the app-server notification stream (above), RUST_LOG=debug on the app-server's stderr, the logs SQLite under $CODEX_HOME, the TUI's /debug-config, and the codex debug … subcommands. See logging-debug.md.

Frequently asked questions about Codex QA

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