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Build MCP App

Build MCP App is an agent skill (a SKILL.md file) from anthropics/claude-plugins-official. It should be used when the user wants to build an "MCP app", add "interactive UI" or "widgets" to an MCP server, "render components in chat", build "MCP UI… It works with Claude Code and has 37,478 GitHub stars across a repository of 7 listed skills.

github.com/anthropics/claude-plugins-official/plugins/mcp-server-dev/skills/build-mcp-app (opens in a new tab)

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 anthropics/claude-plugins-official
/plugin install mcp-server-dev@claude-plugins-official

In the Claude apps, zip the build-mcp-app 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/anthropics/claude-plugins-official.git
cp -r claude-plugins-official/plugins/mcp-server-dev/skills/build-mcp-app .agents/skills/build-mcp-app   # 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/anthropics/claude-plugins-official.git
cp -r claude-plugins-official/plugins/mcp-server-dev/skills/build-mcp-app .cursor/skills/build-mcp-app   # 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

This skill should be used when the user wants to build an "MCP app", add "interactive UI" or "widgets" to an MCP server, "render components in chat", build "MCP UI resources", make a tool that shows a "form", "picker", "dashboard" or "confirmation dialog" inline in the conversation, or mentions "apps SDK" in the context of MCP. Use AFTER the build-mcp-server skill has settled the deployment model, or when the user already knows they want UI widgets.

When it triggers

  • used when the user wants to build an "MCP app", add "interactive UI" or "widgets" to an MCP server, "render components in chat", build "MCP UI resources", make a tool that shows a "form", "picker", "dashboard" or "confirmation dialog" inlin
  • Use AFTER the build-mcp-server skill has settled the deployment model, or when the user already knows they want UI widgets.
  • "MCP app"
  • "interactive UI"
  • "widgets"
  • "render components in chat"
  • "MCP UI resources"
  • "form"

More skills in anthropics/claude-plugins-official

7 skills are listed from this repository.

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FAQ

Build MCP App FAQ

Still curious? Email info@appsgit.com.

What is the Build MCP App skill?

Build MCP App is an agent skill (a SKILL.md file) from anthropics/claude-plugins-official. It should be used when the user wants to build an "MCP app", add "interactive UI" or "widgets" to an MCP server, "render components in chat", build "MCP UI… It works with Claude Code and has 37,478 GitHub stars across a repository of 7 listed skills. Its SKILL.md lives at github.com/anthropics/claude-plugins-official/plugins/mcp-server-dev/skills/build-mcp-app.

How do I install the Build MCP App skill?

In Claude Code, run /plugin marketplace add anthropics/claude-plugins-official and then /plugin install mcp-server-dev@claude-plugins-official. For Codex or Cursor, copy the build-mcp-app folder into .agents/skills/ or .cursor/skills/.

Is the Build MCP App skill free?

Yes. The repository is open source under the Apache-2.0 license.

Is Build MCP App maintained?

The repository's most recent commit was on Oct 5, 2026. appsgit only lists skills from repositories with a commit in the last six months.