Log inSubmit server
OSCAR logo

OSCAR

Builds browser-based OSC control interfaces for software, installations, MIDI, DMX, and networked devices.

InstallRepositoryWebsite
Full README Compare alternatives Embed widget Claim this listing

Install OSCAR

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "oscar": {
      "command": "npx",
      "args": [
        "-y",
        "createwithoscar"
      ]
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

Automated check passed— started and listed 11 tools correctly (Today).

Overview

Users place buttons, sliders, and XY pads on a canvas, configure destination IPs, ports, and addresses, then open the published interface on a device on the same network.

Use cases

  • Build touch interfaces for OSC-compatible software
  • Control interactive installations from a phone or tablet
  • Map buttons and sliders to networked OSC destinations
  • Test OSC layouts locally before deploying a show

Key features

  • Browser-based visual interface editor
  • OSC buttons, sliders, and XY pads
  • LAN access from mobile devices
  • Electron desktop builds
  • Configurable HTTP, socket, OSC, and DMX ports

Tools11

What OSCAR lets your agent do. Expand a tool for its parameters.

Verified live~1.4k tokens of context

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 1d ago

Recent health check succeeded.

What it can do

From the 11 tools this server returned when we ran it; 11 declare their own safety hints.

Makes network requests · 1Read-only tools · 11
Network at startup3 connections
Files written at startupNone
Install scriptsNone
npm provenanceNot published
Package age22 days
Maintainers1

Observed 2026-10-24 in an isolated sandbox. A description of reach, not a security audit.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 4d ago via OSV.dev · createwithoscar (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars192Stargazers on the source repository.
Last commit10d agoMost recent push to the default branch.
Availability100%Our rolling endpoint + install checks that succeeded.
Install checkPassedOur sandbox started it and listed its tools.
Tools exposed11Callable tools this server registers over MCP.

How OSCAR works

What OSCAR MCP server does

OSCAR is presented as a visual interface builder for sending control messages to interactive installations. A project is edited in a browser-based canvas, where controls can be connected to an IP address, port, and OSC message address. The resulting interface can be opened on a phone or tablet connected to the same network as the computer running OSCAR.

The project targets systems that accept OSC, including the examples listed in the README: Modul8, MapMapper, Resolume Arena, TouchDesigner, Ableton Live, Processing, Pure Data, Unity, and Unreal Engine.

How it works

OSCAR runs a local web server and opens the editor at http://localhost:8080 by default. It also reports a LAN address for other devices. The browser communicates with the server through a socket connection, while OSC messages are sent from configured source ports to the selected destination.

A Button can send one value when pressed and another on release, or operate as a toggle. A Slider sends its changing value and can use an inverted range or vertical orientation. An XY Pad sends two values together or separates them into X and Y addresses. The XY Pad supports inverted axes and sends the final position when the user releases it.

The supplied repository does not describe an MCP protocol endpoint, MCP tool schema, or agent-facing operations. Therefore, the OSCAR MCP server label should not be treated as evidence that an AI client can directly create projects or send messages through MCP.

Setup and configuration

Prebuilt installers are available for Windows, macOS, Linux, and 64-bit ARM Linux systems, including Raspberry Pi-compatible builds. Builds are not code signed, so operating systems may show a warning on first launch.

To run from source, install Node.js 18 or newer, clone the repository, run npm install, and start it with npm start. The project also provides commands for serving without rebuilding, watching changes, running tests, and launching the Electron version.

Optional environment variables configure the HTTP, socket, OSC, and DMX ports; the projects directory; browser startup; update checks; and DMX behavior when the application exits. OSCAR_NO_OPEN=1 prevents opening a browser automatically, while OSCAR_NO_UPDATE_CHECK=1 disables release checks.

Tools and capabilities

The documented interface includes:

  • A browser canvas for arranging controls
  • Buttons with press, release, and toggle behavior
  • Sliders with adjustable orientation and range direction
  • XY Pads with combined or separate OSC addresses
  • Project and template loading
  • LAN access from phones and tablets
  • Electron desktop packaging for Windows, macOS, and Linux

Limitations and notes

The OSCAR MCP server documentation supplied here contains no MCP-specific setup, transport details, authentication model, environment variables required by an MCP runtime, or supported MCP clients. It also does not establish that an AI agent can inspect an OSC installation or draft interfaces for review. The documented workflow is manual: build the layout in the editor, configure each control, publish or run the interface, and operate it from a networked device.

OSCAR makes a daily-at-most request to GitHub to check for a newer release unless update checks are disabled.

Read the full README View source on GitHub

Reviews

No reviews yet — be the first to share how it worked for you.

Frequently Asked Questions about OSCAR

OSCAR is an MCP server that the supplied project material does not document as an MCP implementation. It connects browser or Electron interfaces to OSC destinations and interactive-installation software through Button, Slider, and XY Pad controls.

Install OSCAR from a platform-specific release or run it from source with Node.js 18 or newer. From the repository, run `npm install` followed by `npm start`; the application opens a local browser interface.

OSCAR can send OSC messages to compatible software and installations.

Yes, a phone or tablet can open OSCAR's LAN address when connected to the same network as the computer running it. The application prints that address at startup, and the network firewall must allow communication between the devices.

Related MCP servers

All in Developer Tools All alternatives
Add a badge to your READMEShow it’s listed — live SVG, Markdown or HTML.

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:
Live Dynamic SVG PreviewOSCAR AllMCPs Directory Badge
Markdown (GitHub README)
[![AllMCPs](https://allmcps.com/api/badge/oscar?style=directory)](https://allmcps.com/mcp/oscar)
HTML Embed
<a href="https://allmcps.com/mcp/oscar"><img src="https://allmcps.com/api/badge/oscar?style=directory" alt="OSCAR on AllMCPs" /></a>