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OSCAR

OSCAR is an MCP server that connects an AI assistant to OSCAR, the free, open-source editor and server for control interfaces: pages of buttons, sliders and other controls that phones and tablets open, and that send OSC, MIDI and DMX… It has 192 GitHub stars, is released under the BSD-3-Clause license and runs locally with npx -y createwithoscar.

github.com/trafalmejo/OSCAR (opens in a new tab)

Data as of from the GitHub API and the official MCP registry; description from the project's repository. Report an error

View on GitHub (opens in a new tab)

Install OSCAR

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "oscar": {
      "command": "npx",
      "args": [
        "-y",
        "createwithoscar"
      ]
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --transport stdio oscar -- npx -y createwithoscar

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "oscar": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "createwithoscar"
      ]
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "servers": {
    "oscar": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "createwithoscar"
      ]
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

About OSCAR

Connects an AI assistant to OSCAR, the free, open-source editor and server for control interfaces: pages of buttons, sliders and other controls that phones and tablets open, and that send OSC, MIDI and DMX to show software, instruments and lights.

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FAQ

OSCAR FAQ

Still curious? Email info@appsgit.com.

How do I install the OSCAR MCP server?

Add the command npx -y createwithoscar to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is OSCAR free?

The server is open source under the BSD-3-Clause license, so running it is free. It does not declare any required API key.

Is OSCAR actively maintained?

The most recent commit was on Oct 14, 2026. The latest release is v2.1.0, published Oct 4, 2026. appsgit only lists MCP servers with a commit in the last six months.