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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 1,140 GitHub stars across a repository of 2 listed skills.

github.com/alibaba/skill-up/skills/skill-upper (opens in a new tab)

  • Multi-skill repo
  • Needs API key
  • Testing & QA
  • Actively maintained
View on GitHub (opens in a new tab)

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 project

In 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 projects

Standalone 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 projects

Source (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; 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 run/validate/list-cases/report/import/init; or migrate…

When it triggers

  • Use when the user asks to record explicitly attributed Skill usage or feedback; review observations; turn an approved observation into a regression case; evaluate, test, regress, verify, fix, improve, iterate, or evolve a Skill; add or stre

More skills in alibaba/skill-up

2 skills are listed from this repository.

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FAQ

Skill Upper FAQ

Still curious? Email info@appsgit.com.

What is the Skill Upper skill?

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 1,140 GitHub stars across a repository of 2 listed skills. Its SKILL.md lives at github.com/alibaba/skill-up/skills/skill-upper.

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 Sep 29, 2026. Its latest release is v0.12.0. appsgit only lists skills from repositories with a commit in the last six months.