AI Plugin Index
Ext Apps
Verified · npm:@modelcontextprotocolMCP server by modelcontextprotocol · updated · ★ 3.0k · 3398k downloads a week
MCP Apps SDK — Enable MCP servers to display interactive user interfaces in conversational clients. Ext Apps is published by npm:@modelcontextprotocol from its verified domain in the official MCP Registry.
Last commit 25 days ago
No licence found, so reuse rights are unclear
Clear description, published package or server URL, 2,983 stars, original repository
Not checked yet. What we check
Install Ext Apps
Built from the published package, never by AIclaude mcp add ext-apps -- npx -y @modelcontextprotocol/ext-appsRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"ext-apps": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/ext-apps"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"ext-apps": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/ext-apps"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"ext-apps": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/ext-apps"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add ext-apps -- npx -y @modelcontextprotocol/ext-appsgemini mcp add ext-apps npx -y @modelcontextprotocol/ext-apps
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the ext-apps block.
Ext Apps: common questions
How do I install Ext Apps?
In Claude Code run claude mcp add ext-apps -- npx -y @modelcontextprotocol/ext-apps. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is Ext Apps the official server?
Ext Apps is published by npm:@modelcontextprotocol from its verified domain in the official MCP Registry.
Is Ext Apps free?
The code is published under the NOASSERTION licence. The service it connects to may have its own pricing.
Is Ext Apps safe to use?
It scores 88 of 100. Grades: maintenance A, licence F, quality A. The security check has not run for it yet. Review the code before you install. How grades work.
Does Ext Apps work with ChatGPT?
Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.