Skill Installer
Installs OpenAI Codex skills from openai/skills or any GitHub repo path — built for Codex, not Claude Code.
Test report
- Verdict
- Works with setup
- Score
- Tested
- Jul 14, 2026
- Environment
- Claude Code 2.x (agent harness)
- Upstream re-checked
- Jul 18, 2026 · 313626a
Ran the installer for real against openai/skills: it correctly zip-downloaded and validated the 'pdf' skill folder end to end, but it's a Codex tool through and through — default destination is $CODEX_HOME/skills and it tells you to 'Restart Codex,' so a Claude Code user has to manually override --dest and ignore that final instruction.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 5/5
- Triggers reliably 5/5
- Output vs. baseline 6/10
- Docs & honesty 4/5
What Skill Installer does
Lists and installs Codex skills into $CODEX_HOME/skills from the curated/experimental openai/skills lists or an arbitrary GitHub repo path, using a zip download with git sparse-checkout fallback. A real run confirmed the installer script genuinely works end to end, but it is a Codex-CLI tool through and through (destination convention, 'Restart Codex' messaging), so a Claude Code user has to override the default. Triggers on requests to list installable skills or install a skill from a repo, including private ones.
How to install Skill Installer
git clone https://github.com/ratacat/claude-skills
cd claude-skills
mkdir -p ~/.claude/skills
cp -r skills/.system/skill-installer ~/.claude/skills/skill-installer
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Commands — how to trigger Skill Installer
-
/skill-installerInstalls OpenAI Codex skills from openai/skills or any GitHub repo path — built for Codex, not Claude Code.
It also activates on plain-language prompts like these:
-
List the installable skills from the openai/skills curated list. -
Install the pdf skill from openai/skills into my Codex setup please. -
Grab this skill from github.com/foo/bar/tree/main/skills/baz for me.
Frequently asked questions
- Is the Skill Installer skill free?
- Yes. The skill itself is free from ratacat/claude-skills. SkillProof publishes the install command and an independent test verdict at no cost.
- Does Skill Installer work with Claude Code?
- We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Works with setup. Ran the installer for real against openai/skills: it correctly zip-downloaded and validated the 'pdf' skill folder end to end, but it's a Codex tool through and through — default destination is $CODEX_HOME/skills and it tells you to 'Restart Codex,' so a Claude Code user has to manually override --dest and ignore that final instruction.
- What is the Skill Installer SkillProof Score?
- 8.0/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 4/5.
- How do I install Skill Installer?
- Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
- Can I use Skill Installer with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
- The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.