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Skill Builder

Skill Builder is an agent skill (a SKILL.md file) from yusufkaraaslan/Skill_Seekers. Automatically detect source types and build AI skills using Skill Seekers. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 15,223 GitHub stars. Install it by copying the skill folder into your agent's skills directory.

github.com/yusufkaraaslan/Skill_Seekers/distribution/claude-plugin/skills/skill-builder (opens in a new tab)

Data as of from the GitHub API; description from the skill's SKILL.md. Report an error

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/yusufkaraaslan/Skill_Seekers.git
cp -r Skill_Seekers/distribution/claude-plugin/skills/skill-builder ~/.claude/skills/skill-builder   # personal, or .claude/skills in a project

In the Claude apps, zip the skill-builder 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/yusufkaraaslan/Skill_Seekers.git
cp -r Skill_Seekers/distribution/claude-plugin/skills/skill-builder .agents/skills/skill-builder   # 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/yusufkaraaslan/Skill_Seekers.git
cp -r Skill_Seekers/distribution/claude-plugin/skills/skill-builder .cursor/skills/skill-builder   # 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

Automatically detect source types and build AI skills using Skill Seekers. Use when the user wants to create skills from documentation, repos, PDFs, videos, or other knowledge sources. This skill uses the Skill Seekers MCP server, which provides 40 tools for converting knowledge sources into AI-ready skills. If the MCP tools are not available, use the CLI fallback at the bottom of this file instead — do not stop.

When it triggers

  • Use when the user wants to create skills from documentation, repos, PDFs, videos, or other knowledge sources.

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FAQ

Skill Builder FAQ

Still curious? Email info@appsgit.com.

How do I install the Skill Builder skill?

Copy the skill-builder 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 Builder skill free?

Yes. The repository is open source under the MIT license.

Is Skill Builder maintained?

The repository's most recent commit was on Sep 30, 2026. Its latest release is v3.10.0. appsgit only lists skills from repositories with a commit in the last six months.