Agent skill

Codex CLI

by wentorai in wentorai/Research-Claw

Reference for using OpenAI Codex CLI to handle complex coding tasks.

Custom licenceAuto-check passedDevelopment

Install Codex CLI

skills CLI
$ npx skills add wentorai/Research-Claw --skill codex-cli -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install wentorai/Research-Claw codex-cli --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/wentorai/Research-Claw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/codex-cli .claude/skills/codex-cli && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
codex-cli
GitHub stars
858
Token cost
~684 tokens
SKILL.md length
144 words
Files
1
Skills in repo
29
Repo updated
First seen
Licence
Custom licence

At a glance

Reference for using OpenAI Codex CLI to handle complex coding tasks.

  • Research-Claw needs to delegate multi-file projects
  • SKILL.md covers Detect Installation, Install, Non-Interactive Usage (exec) and Key Flags, plus 2 more sections
  • Calls codex and npm
  • Iterative debugging

What it does

Codex CLI is an agent skill from wentorai/Research-Claw. Reference for using OpenAI Codex CLI to handle complex coding tasks. Use when Research-Claw needs to delegate multi-file projects, iterative debugging, or complex code generation to a specialized AI coding tool. Trigger words: codex, coding CLI, delegate coding, complex project.

Its SKILL.md is about 680 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. It works with OpenAI. The repository describes itself as: In the AI era, why can't everyone be a Principal Investigator?

When your agent uses it

  • Research-Claw needs to delegate multi-file projects
  • Iterative debugging
  • Complex code generation to a specialized AI coding tool
  • Delegate coding

Example prompts

  • “/codex-cli”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit 5015be7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • codex
    • npm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • developers.openai.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Codex CLI loads about 684 tokens when it runs. Until then it costs about 72 tokens; SKILL.md has 144 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~72
When it runs · the whole SKILL.md, loaded when a task matches
~684

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 144 words (~684 tokens).

“Terminal-based AI coding agent by OpenAI. Reads, edits, and runs code locally in a sandboxed environment. Built in Rust.”

— opening of SKILL.md by wentorai, Custom licence
name
codex-cli

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/codex-cli of wentorai/Research-Claw.

Open the folder on GitHubat commit 5015be7

Compare with similar skills

Codex CLI next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Codex CLI compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Codex CLI this skillwentorai/Research-Claw858—~684Automated safety check: PassCustom licence
PR Design DocOpenHands/OpenHands90k—~2.4kAutomated safety check: PassMIT
Get API Docs with chubandrewyng/context-hub14k2 repos~775Automated safety check: PassMIT
Open Code Review CLIalibaba/open-code-review44k—~3.1kAutomated safety check: PassApache-2.0
Codexskills-directory/skill-codex1.5k3 repos~1.8kAutomated safety check: PassMIT
Implementation Final Reviewopenai/openai-agents-python30k—~2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Codex CLI

What does Codex CLI do?

Reference for using OpenAI Codex CLI to handle complex coding tasks. Codex CLI is an agent skill from wentorai/Research-Claw. Reference for using OpenAI Codex CLI to handle complex coding tasks.

When should I use Codex CLI?

Codex CLI fits situations like: research-Claw needs to delegate multi-file projects; iterative debugging; complex code generation to a specialized AI coding tool; delegate coding.

How do I install Codex CLI in Claude Code?

Run `npx skills add wentorai/Research-Claw --skill codex-cli -a claude-code`. Or copy the skill folder (skills/codex-cli in wentorai/Research-Claw) into .claude/skills/codex-cli in your project. Claude Code loads it when a task matches its description.

How do I install Codex CLI in Codex?

Run `npx skills add wentorai/Research-Claw --skill codex-cli -a codex`. Or copy the skill folder (skills/codex-cli in wentorai/Research-Claw) into .agents/skills/codex-cli in your project. Codex loads it when a task matches its description.

Can I use Codex CLI in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add wentorai/Research-Claw --skill codex-cli -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/codex-cli, .gemini/skills/codex-cli, .github/skills/codex-cli and .opencode/skills/codex-cli in your project.

What does Codex CLI need to run?

Going by SKILL.md and its folder, Codex CLI needs the command-line tools its instructions call (codex and npm). Our summary lists: Node.js.

Does Codex CLI access the network?

SKILL.md names 1 domain. As links in the text: developers.openai.com. This is read from the text; nothing was executed.

Is Codex CLI safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Codex CLI use?

Codex CLI has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Codex CLI use?

About 684 tokens (SKILL.md is roughly 2.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Codex CLI?

Skills that share tags, products or a category with Codex CLI: PR Design Doc (OpenHands/OpenHands, 90k stars), Get API Docs with chub (andrewyng/context-hub, 14k stars), Open Code Review CLI (alibaba/open-code-review, 44k stars) and Codex (skills-directory/skill-codex, 1.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Codex CLI?

wentorai (a GitHub user) maintains it in wentorai/Research-Claw, which has 858 GitHub stars. The repository holds 29 skills in this directory. The repository was last updated on August 20, 2026.

Source: wentorai/Research-Claw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.