Deepseek Reason
ruvnet/ruflo
Reasoning-mode completion against DeepSeek's deepseek-reasoner model (R1) via /v1/chat/completions.
Start an OpenAI Codex CLI session for deep reasoning and code analysis
MITAuto-check passed
Install Codex
$ npx skills add agentic-box/owlex --skill codex -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install agentic-box/owlex codex --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/agentic-box/owlex.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/codex .claude/skills/codex && rm -rf skills-srcUse ~/.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/
Install the "codex" agent skill from https://github.com/agentic-box/owlex/tree/main/skills/codex into .claude/skills/codex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/agentic-box/owlex/tree/main/skills/codexType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add agentic-box/owlex --skill codex -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install agentic-box/owlex codex --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agentic-box/owlex.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/codex .agents/skills/codex && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "codex" agent skill from https://github.com/agentic-box/owlex/tree/main/skills/codex into .agents/skills/codex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add agentic-box/owlex --skill codex -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install agentic-box/owlex codex --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agentic-box/owlex.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/codex .cursor/skills/codex && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "codex" agent skill from https://github.com/agentic-box/owlex/tree/main/skills/codex into .cursor/skills/codex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/agentic-box/owlex.git --path skills/codex--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add agentic-box/owlex --skill codex -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install agentic-box/owlex codex --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agentic-box/owlex.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/codex .gemini/skills/codex && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "codex" agent skill from https://github.com/agentic-box/owlex/tree/main/skills/codex into .gemini/skills/codex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install agentic-box/owlex codexInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add agentic-box/owlex --skill codex -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/agentic-box/owlex.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/codex .github/skills/codex && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "codex" agent skill from https://github.com/agentic-box/owlex/tree/main/skills/codex into .github/skills/codex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add agentic-box/owlex --skill codex -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install agentic-box/owlex codex --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/agentic-box/owlex.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/codex .opencode/skills/codex && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "codex" agent skill from https://github.com/agentic-box/owlex/tree/main/skills/codex into .opencode/skills/codex/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "codex", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
codex- GitHub stars
- 140
- Token cost
- ~212 tokens
- SKILL.md length
- 87 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- MIT
At a glance
Start an OpenAI Codex CLI session for deep reasoning and code analysis
- Works in 5 steps: Take the user's prompt from: $ARGUMENTS → If no argument provided, ask what they… → Determine if new or continuation → …
- SKILL.md covers Instructions and Usage
- Calls codex
What it does
Codex is an agent skill from agentic-box/owlex. Start an OpenAI Codex CLI session for deep reasoning and code analysis
Its SKILL.md is about 210 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The licence is MIT.
Example prompts
- “/codex”
Requirements
- Pre-approved tools (allowed-tools): mcp__owlex__start_codex_session, mcp__owlex__resume_codex_session
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Take the user's prompt from: $ARGUMENTS
- If no argument provided, ask what they want Codex to help with
- Determine if new or continuation
- Return immediately with the task_id
- Tell the user
What it can do on your machine
Read from SKILL.md and the folder at commit 05f0091. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
mcp__owlex__start_codex_sessionmcp__owlex__resume_codex_session
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
codex
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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 loads about 212 tokens when it runs. Until then it costs about 19 tokens; SKILL.md has 87 words of instructions outside code blocks.
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
The full file from agentic-box/owlex at commit 05f0091, republished under its MIT licence (© agentic-box). 87 words, ~212 tokens.
Download SKILL.mdSave it as
.claude/skills/codex/SKILL.md (or your agent's skills folder).- name
- codex
- description
- Start an OpenAI Codex CLI session for deep reasoning and code analysis
- allowed-tools
- mcp__owlex__start_codex_session, mcp__owlex__resume_codex_session
- user-invocable
- true
Codex Session
Start a Codex CLI session for deep reasoning, code review, and analysis.
Instructions
- Take the user's prompt from: $ARGUMENTS
- If no argument provided, ask what they want Codex to help with
- Determine if new or continuation:
- New topic: Use
start_codex_session - Follow-up: Use
resume_codex_session
- New topic: Use
- Return immediately with the task_id
- Tell the user:
- "Codex started (task: <task_id>)"
- "Check results with:
/codex-result <task_id>"
Do NOT call wait_for_task. Return immediately.
Usage
/codex Explain how the auth flow works/codex Find bugs in this function
© agentic-box, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/codex of agentic-box/owlex.
Open the folder on GitHubat commit 05f0091
Compare with similar skills
Codex 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Codex this skillagentic-box/owlex | 140 | — | ~212 | Automated safety check: Pass | MIT | |
| Deepseek Reasonruvnet/ruflo | 74k | — | ~626 | Automated safety check: Notes | MIT | |
| Ejentum Reasoning Harnesssickn33/agentic-awesome-skills | 47k | 1 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Nowait Reasoning Optimizerdavila7/claude-code-templates | 32k | 3 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Recall Reasoningparcadei/Continuous-Claude-v3 | 3.9k | 1 repos | ~758 | Automated safety check: Pass | MIT | |
| Nv Reason CxrNVIDIA/skills | 3.5k | — | ~3.9k | Automated safety check: Notes | Apache-2.0 |
Similar skills
Ejentum Reasoning Harness
sickn33/agentic-awesome-skills
MCP server exposing four cognitive harness modes (reasoning, code, anti-deception, memory).
Nowait Reasoning Optimizer
davila7/claude-code-templates
Implements the NOWAIT technique for efficient reasoning in R1-style LLMs.
Recall Reasoning
parcadei/Continuous-Claude-v3
Search past reasoning for relevant decisions and approaches. An agent skill from parcadei/Continuous-Claude-v3.
- Official
Nv Reason Cxr
NVIDIA/skills
Used for command-shape or live NV-Reason-CXR chest X-ray reasoning smoke tests.
Diagnostic Reasoning
kunchenguid/firstmate
Agent-only procedure for diagnosing reported bugs. An agent skill from kunchenguid/firstmate.
More from agentic-box/owlex
Council
agentic-box/owlex
Consult the AI council (Codex + Gemini + OpenCode) for multi-perspective answers
Critique
agentic-box/owlex
Council critique mode - agents find bugs and flaws in each other's answers
Gemini
agentic-box/owlex
Start a Google Gemini CLI session with 1M context for large codebase analysis
Questions about Codex
What does Codex do?
Start an OpenAI Codex CLI session for deep reasoning and code analysis. Codex is an agent skill from agentic-box/owlex.
How do I install Codex in Claude Code?
Run `npx skills add agentic-box/owlex --skill codex -a claude-code`. Or copy the skill folder (skills/codex in agentic-box/owlex) into .claude/skills/codex in your project. Claude Code loads it when a task matches its description.
How do I install Codex in Codex?
Run `npx skills add agentic-box/owlex --skill codex -a codex`. Or copy the skill folder (skills/codex in agentic-box/owlex) into .agents/skills/codex in your project. Codex loads it when a task matches its description.
Can I use Codex 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 agentic-box/owlex --skill codex -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, .gemini/skills/codex, .github/skills/codex and .opencode/skills/codex in your project.
What does Codex need to run?
Going by SKILL.md and its folder, Codex needs the command-line tools its instructions call (codex). Its frontmatter pre-approves these tools: mcp__owlex__start_codex_session, mcp__owlex__resume_codex_session.
Does Codex access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Codex 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 use?
Codex is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Codex use?
About 212 tokens (SKILL.md is roughly 848 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?
Skills that share tags, products or a category with Codex: Deepseek Reason (ruvnet/ruflo, 74k stars), Ejentum Reasoning Harness (sickn33/agentic-awesome-skills, 47k stars), Nowait Reasoning Optimizer (davila7/claude-code-templates, 32k stars) and Recall Reasoning (parcadei/Continuous-Claude-v3, 3.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Codex?
agentic-box (a GitHub organization) maintains it in agentic-box/owlex, which has 140 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on March 15, 2026.
Source: agentic-box/owlex on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.