dominus-cli vs Studio Sidecar
dominus-cli is an MCP server published by rbxrootx. Marketplaces we read that list it: 1 (npm registry (MCP servers)). Studio Sidecar is an MCP server published by gjlmotea. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-09. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  Studio Sidecar | |
|---|---|---|
| npm registry (MCP servers) | Listed Version: 3.4.0 Downloads/month (npm): 1 267 Downloads/week (npm): 411 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.1 Downloads/month (npm): 240 Downloads/week (npm): 63 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | dominus-cli | Studio Sidecar |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | No figure on GitHub | 1 |
| Forks (GitHub) (differs) | No figure on GitHub | 0 |
| Last release (differs) | 2026-10-26 (better) | 2026-10-19 (worse) |
| Where it runs (differs) | On your machine (dominus-cli) | On your machine (@gjlmotea/studio-sidecar-mcp) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 4, secrets among them: 1 |
| Licence (differs) | SEE LICENSE IN LICENSE | Not stated |
| Repository (differs) | github.com/rbxrootx/dominus | github.com/gjlmotea/studio-sidecar-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-12 | 2026-10-18 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
dominus-cli
romcp: a Roblox Studio MCP server and CLI for building, testing, profiling, and managing experiences.
Studio Sidecar
Companion to Roblox Studio's built-in MCP: open places, guard writes, Open Cloud asset uploads.
How to run each
dominus-cli
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Studio Sidecar As a local MCP server: npm package
claude mcp add --env "ROBLOX_API_KEY=<YOUR_ROBLOX_API_KEY>" --transport stdio studio-sidecar-for-roblox-studio-mcp -- npx -y @gjlmotea/studio-sidecar-mcpRequires: ROBLOX_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of dominus-cli publish no settings it asks for, so we do not compare settings.
What it can do: dominus-cli · What it can do: Studio Sidecar · Compare two other plugins
Package data comes from the public npm registry (registry.npmjs.org). Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.