Studio Sidecar MCP Server

by gjlmoteaio.github.gjlmotea/studio-sidecar-for-roblox-studio-mcpv0.1.0

Companion to Roblox Studio's built-in MCP: open places, guard writes, Open Cloud asset uploads.

0Node.jsstdioofficial registry

context tax

pending

security

97/100

cold start

pending

freshness

Activetoday

Our reading of Studio Sidecar, from the data

Studio Sidecar is a gaming MCP server from gjlmotea, listed in the official MCP Registry.

We haven't measured its tool list yet, so its token cost is unknown.

Maintenance is active: the last public signal was in the last day (2026-10-19). For comparison, 73% of gaming servers are active or maintained.

With 0 GitHub stars it ranks #185 of 428 gaming servers we index.

It runs locally on your machine over stdio and needs one secret (ROBLOX_API_KEY); use a scoped, least-privilege key.

Install Studio Sidecar MCP server

claude mcp add studio-sidecar -e ROBLOX_API_KEY='<roblox-api-key>' -- npx -y @gjlmotea/studio-sidecar-mcp

{
  "mcpServers": {
    "studio-sidecar": {
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp"
      ],
      "env": {
        "ROBLOX_API_KEY": "<roblox-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "studio-sidecar": {
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp"
      ],
      "env": {
        "ROBLOX_API_KEY": "<roblox-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "studio-sidecar": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp"
      ],
      "env": {
        "ROBLOX_API_KEY": "<roblox-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "studio-sidecar": {
      "command": "npx",
      "args": [
        "-y",
        "@gjlmotea/studio-sidecar-mcp"
      ],
      "env": {
        "ROBLOX_API_KEY": "<roblox-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
ROBLOX_API_KEY	—	yes	Open Cloud API key with Asset read and write; only the four Open Cloud tools need it
ROBLOX_CREATOR_USER_ID	—	—	Roblox user ID recorded as the creator of uploaded assets
ROBLOX_UPLOAD_ROOT	—	—	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
ROBLOX_STUDIO_PATH	—	—	Roblox Studio executable; resolved automatically when unset

Security signals

97/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Deductions

No security policy (SECURITY.md)-3

Checks

✓Repository hygiene (archived, activity, license, security policy)
○Package metadata (install scripts, provenance) — pending
○Tool descriptions (prompt-injection and hidden-text heuristics) — pending
○Source scan (secrets, CVEs, risky code) by vectra-guard — pending

Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules

Freshness

Active — last maintenance signal today. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-19 · today · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-18 · today · official registry · v0.1.0

How it compares in Gaming

Against the most-starred gaming servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
Studio Sidecar (this)	0	—	not measured	Active	local
Godot	6,152	—	not measured	Stale	local
Unity	4,494	—	not measured	Active	local
Unity	1,936	—	not measured	Active	—
Gearboy	1,219	—	not measured	Active	local
Unreal Engine	958	—	not measured	Active	local + hosted

All gaming MCP servers

FAQ

›How do I install the Studio Sidecar MCP server in Claude Code?

Run: claude mcp add studio-sidecar -e ROBLOX_API_KEY='<roblox-api-key>' -- npx -y @gjlmotea/studio-sidecar-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Studio Sidecar require an API key?

Yes. It expects ROBLOX_API_KEY, of which 1 is a secret.

›Can I use Studio Sidecar as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Studio Sidecar in the official MCP registry?

Yes, as io.github.gjlmotea/studio-sidecar-for-roblox-studio-mcp.

Sources and method

Official MCP Registry entry: updated 2026-10-18
GitHub repository: fetched 2026-10-19
Package registry (npm / PyPI): listed
Security signals, computed by us: 2026-10-19
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.