Skill Upper
Skill Upper is an agent skill (a SKILL.md file) from alibaba/skill-up. Capture and review Agent Skill observations, and create, run, diagnose, or iteratively improve Skill evaluations (evals) with the skill-up CLI. It works with Claude Code and Codex and has 1,352 GitHub stars across a repository of 2 listed skills.
github.com/alibaba/skill-up/skills/skill-upper (opens in a new tab)
Data as of from the GitHub API; description from the skill's SKILL.md. Report an error
- Multi-skill repo
- Needs API key
- Testing & QA
- Active
Add this skill
Claude
Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):
git clone --depth 1 https://github.com/alibaba/skill-up.git
cp -r skill-up/skills/skill-upper ~/.claude/skills/skill-upper # personal, or .claude/skills in a projectIn the Claude apps, zip the skill-upper folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).
ChatGPT / Codex
Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:
git clone --depth 1 https://github.com/alibaba/skill-up.git
cp -r skill-up/skills/skill-upper .agents/skills/skill-upper # repo; ~/.agents/skills for all projectsStandalone skills also load in the ChatGPT desktop app.
Cursor
Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:
git clone --depth 1 https://github.com/alibaba/skill-up.git
cp -r skill-up/skills/skill-upper .cursor/skills/skill-upper # project; ~/.cursor/skills for all projectsSource (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)
What this skill does
Capture and review Agent Skill observations, and create, run, diagnose, or iteratively improve Skill evaluations (evals) with the skill-up CLI. Use when the user asks to record explicitly attributed Skill usage or feedback; review observations or user-supplied traces/transcripts; turn an approved observation into a regression case; evaluate, test, regress, verify, fix, improve, iterate, or evolve a Skill; add or strengthen eval cases; write eval.yaml/case.yaml; run skill-up…
When it triggers
- Use when the user asks to record explicitly attributed Skill usage or feedback; review observations or user-supplied traces/transcripts; turn an approved observation into a regression case; evaluate, test, regress, verify, fix, improve, ite
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How do I install the Skill Upper skill?
Copy the skill-upper folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.
Is the Skill Upper skill free?
Yes. The repository is open source under the Apache-2.0 license. The skill mentions an API key or token for an external service, which may need its own account.
Is Skill Upper maintained?
The repository's most recent commit was on Oct 26, 2026. Its latest release is v0.14.0. appsgit only lists skills from repositories with a commit in the last six months.