How do I install the Codex skill?

Run npx skillmds@latest add tomevault-io/codex-4 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Codex safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: FAIL, Skill Scanner: PASS. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Codex?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Codex free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Codex by tomevault-io — Agent Skill

Name: Codex
Author: tomevault-io

File contents

Codex AI Consultation

Query OpenAI Codex for a second opinion. Pass your question as $ARGUMENTS.

Usage

/codex What's the most efficient way to batch database inserts with Drizzle?
/codex Suggest alternative approaches for this caching strategy

Workflow

Step 1: Model Selection

Before running the query, check which model is configured. Read ~/.codex/config.toml to find the current model setting. If no model is configured there, ask the user which OpenAI model to use via AskUserQuestion (provide the latest frontier options you're aware of, plus an "Other" escape hatch). Pass the chosen model with -m MODEL_NAME.

If the user has used this skill before in the same session and already selected a model, reuse that choice without asking again.

Step 2: Context Gathering

If $ARGUMENTS references specific files or code, read those files first and include relevant snippets in the prompt.

Step 3: Run Query

codex exec -m MODEL_NAME "YOUR PROMPT HERE" -o /tmp/codex-result.txt 2>/dev/null; cat /tmp/codex-result.txt 2>/dev/null; rm -f /tmp/codex-result.txt

Step 4: Present Results

Present Codex's response to the user. Add your own perspective — note where you agree, disagree, or have additional context.

Rules

Always suppress stderr to avoid UI noise
For file context, include relevant snippets directly in the prompt string
Keep prompts focused — don't dump entire files unless necessary
If Codex returns an error or empty response, inform the user and suggest they check codex CLI auth
Do NOT use --dangerously-bypass-approvals-and-sandbox — this is read-only consultation
Clean up any temp files after reading

Source: schmug/claudzibit — distributed by TomeVault.

---name: codex-4description: Quick consultation with OpenAI Codex CLI. Use when you want another AI's perspective on code, architecture, or any technical question. Use when this capability is needed.---# Codex AI ConsultationQuery OpenAI Codex for a second opinion. Pass your question as $ARGUMENTS.## Usage```/codex What's the most efficient way to batch database inserts with Drizzle?/codex Suggest alternative approaches for this caching strategy```## Workflow### Step 1: Model SelectionBefore running the query, check which model is configured. Read `~/.codex/config.toml` to find the current `model` setting. If no model is configured there, ask the user which OpenAI model to use via AskUserQuestion (provide the latest frontier options you're aware of, plus an "Other" escape hatch). Pass the chosen model with `-m MODEL_NAME`.If the user has used this skill before in the same session and already selected a model, reuse that choice without asking again.### Step 2: Context GatheringIf $ARGUMENTS references specific files or code, read those files first and include relevant snippets in the prompt.### Step 3: Run Query```bashcodex exec -m MODEL_NAME "YOUR PROMPT HERE" -o /tmp/codex-result.txt 2>/dev/null; cat /tmp/codex-result.txt 2>/dev/null; rm -f /tmp/codex-result.txt```### Step 4: Present ResultsPresent Codex's response to the user. Add your own perspective — note where you agree, disagree, or have additional context.## Rules- Always suppress stderr to avoid UI noise- For file context, include relevant snippets directly in the prompt string- Keep prompts focused — don't dump entire files unless necessary- If Codex returns an error or empty response, inform the user and suggest they check `codex` CLI auth- Do NOT use `--dangerously-bypass-approvals-and-sandbox` — this is read-only consultation- Clean up any temp files after reading---> Source: [schmug/claudzibit](https://github.com/schmug/claudzibit) — distributed by [TomeVault](https://tomevault.io).

Frequently asked questions

Codex