Studio Sidecar MCP

A companion Model Context Protocol server for Roblox Studio that extends the built-in StudioMCP capabilities. It allows agents to open places that are not yet open, guard writes by PlaceId to prevent accidental overwrites, run Luau scripts with output limits bypassed, and manage assets via Roblox Open Cloud including uploading, updating, and archiving.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by gjlmotea

Vendor documentation

What you can do with it

Open Roblox places that are not currently open in Studio
Guard script writes by PlaceId to prevent silent overwrites
Run Luau code with output limits bypassed and errors returned
Upload, update, or archive assets via Roblox Open Cloud

Source and maintenance

Community listingRegistry 0.1.1

mcp-registry: io.github.gjlmotea/studio-sidecar-for-roblox-studio-mcp@0.1.1 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@gjlmotea/studio-sidecar-mcp 0.1.1

npm

@gjlmotea/studio-sidecar-mcp package definition

{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "@gjlmotea/studio-sidecar-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "ROBLOX_API_KEY",
      "format": "string",
      "description": "Open Cloud API key with Asset read and write; only the four Open Cloud tools need it"
    },
    {
      "name": "ROBLOX_CREATOR_USER_ID",
      "format": "string",
      "description": "Roblox user ID recorded as the creator of uploaded assets"
    },
    {
      "name": "ROBLOX_UPLOAD_ROOT",
      "format": "string",
      "description": "Folders that uploads may read from, joined with the platform path delimiter: ';' on Windows (C:\\assets\\models;D:\\decals), ':' on macOS (/Users/you/models:/Volumes/art/decals). Uploads are refused when unset"
    },
    {
      "name": "ROBLOX_STUDIO_PATH",
      "format": "filepath",
      "description": "Roblox Studio executable; resolved automatically when unset"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "studio-sidecar-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp@0.1.1"
      ],
      "env": {
        "ROBLOX_API_KEY": "<YOUR_ROBLOX_API_KEY>",
        "ROBLOX_CREATOR_USER_ID": "<YOUR_ROBLOX_CREATOR_USER_ID>",
        "ROBLOX_UPLOAD_ROOT": "<YOUR_ROBLOX_UPLOAD_ROOT>",
        "ROBLOX_STUDIO_PATH": "<YOUR_ROBLOX_STUDIO_PATH>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "studio-sidecar-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp@0.1.1"
      ],
      "env": {
        "ROBLOX_API_KEY": "<YOUR_ROBLOX_API_KEY>",
        "ROBLOX_CREATOR_USER_ID": "<YOUR_ROBLOX_CREATOR_USER_ID>",
        "ROBLOX_UPLOAD_ROOT": "<YOUR_ROBLOX_UPLOAD_ROOT>",
        "ROBLOX_STUDIO_PATH": "<YOUR_ROBLOX_STUDIO_PATH>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "studio-sidecar-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp@0.1.1"
      ],
      "env": {
        "ROBLOX_API_KEY": "<YOUR_ROBLOX_API_KEY>",
        "ROBLOX_CREATOR_USER_ID": "<YOUR_ROBLOX_CREATOR_USER_ID>",
        "ROBLOX_UPLOAD_ROOT": "<YOUR_ROBLOX_UPLOAD_ROOT>",
        "ROBLOX_STUDIO_PATH": "<YOUR_ROBLOX_STUDIO_PATH>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "studio-sidecar-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp@0.1.1"
      ],
      "env": {
        "ROBLOX_API_KEY": "<YOUR_ROBLOX_API_KEY>",
        "ROBLOX_CREATOR_USER_ID": "<YOUR_ROBLOX_CREATOR_USER_ID>",
        "ROBLOX_UPLOAD_ROOT": "<YOUR_ROBLOX_UPLOAD_ROOT>",
        "ROBLOX_STUDIO_PATH": "<YOUR_ROBLOX_STUDIO_PATH>"
      }
    }
  }
}

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