MCP Apps Development

Build MCP Apps that render interactive UI inside conversational AI clients using the @modelcontextprotocol/ext-apps SDK.

When to Use

• Building MCP tools that display interactive UI (charts, forms, dashboards)
• Creating visual resource viewers inside AI chat interfaces
• Adding rich media output to existing MCP servers (video, maps, 3D, music)
• Migrating OpenAI chat app plugins to the MCP Apps standard
• Building fullscreen interactive experiences within MCP-compatible hosts

When NOT to Use

• Building headless MCP servers (tools, resources, prompts only) -> use mcp-server-development skill
• Creating standalone web applications outside AI clients
• Building API integrations without a visual component

Decision Tree