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An

An is an agent skill (a SKILL.md file) from BuilderIO/skills. Open and operate Agent-Native workspace apps through Dispatch MCP, with inline app surfaces, browser-session authentication, and current screen state. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 4,613 GitHub stars across a repository of 3 listed skills.

github.com/BuilderIO/skills/skills/an (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

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add BuilderIO/skills
/plugin install builder-skills@builder-skills

In the Claude apps, zip the an 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/BuilderIO/skills.git
cp -r skills/skills/an .agents/skills/an   # 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/BuilderIO/skills.git
cp -r skills/skills/an .cursor/skills/an   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (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

Open and operate Agent-Native workspace apps through Dispatch MCP, with inline app surfaces, browser-session authentication, and current screen state. Use /an to open an Agent-Native app beside the conversation and keep the app's live UI and the agent's actions in the same workflow. The first argument is the Dispatch app id. For example, /an slides opens the Slides editor. After it opens, the user can sign in in that browser surface and ask for new decks or focused edits in ordinary language.

More skills in BuilderIO/skills

3 skills are listed from this repository.

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FAQ

An FAQ

Still curious? Email info@appsgit.com.

How do I install the An skill?

In Claude Code, run /plugin marketplace add BuilderIO/skills and then /plugin install builder-skills@builder-skills. For Codex or Cursor, copy the an folder into .agents/skills/ or .cursor/skills/.

Is the An skill free?

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

Is An maintained?

The repository's most recent commit was on Oct 22, 2026. appsgit only lists skills from repositories with a commit in the last six months.