Studio Sidecar

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/gjlmotea-studio-sidecar-for-roblox-studio-mcp

About

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 25, 2026.

Tools

4 read · 4 write · 3 delete

Secrets

1 (API keys, tokens or passwords)

Install scripts

None found

Runs as

Node.js package

Tools (11)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• roblox_archive_assetArchive or restore an assetcan change or delete data

  Works only on **asset types that support archiving**. Model and Decal have never supported archiving; this tool blocks them up front and explains why, so you do not keep retrying a request that is bound to fail.

• roblox_cleanup_stubsClean up leftover StudioMCP stubscan change or delete data

  MCP clients do not always reap their own StudioMCP stubs when they exit, so stubs pile up over time. This tool always excludes the broker (killing it drops every connection, Studio's own included), and gives up entirely when it cannot identify the broker. By default it only reports; to actually clean up you must pass apply=true explicitly.

• roblox_extract_placeExtract a place into a diffable text snapshot

  Extract all of a place's scripts and its place settings as plain text into the output folder (src/**, scene/place.json, scene/scripts.json). **Read-only throughout**: it never writes to the DataModel. This tool wraps up the whole chunking/sentinel/per-file byte-check machinery needed because a single execute_luau reply is capped at 100000 characters and silently truncated beyond that. If any chunk is missing its sentinel, the whole batch aborts, because a partially correct snapshot is more dangerous than a failed extraction (it looks like success). It first asks each connected Studio in turn t…

• roblox_get_assetRead asset status and its real authorread-only

  Return revisionId, moderationState, state and creatorUserId. creatorUserId is the **author**; the creatorId returned by the built-in MCP's search_asset is the **holder**, and the two differ. This is the only way to tell "what you uploaded" from "what you took from the Toolbox".

• roblox_get_statusRead Roblox companion statusread-only

  Report the resolved Studio executable, whether the Open Cloud key is ready, and the folders uploads are allowed from. Check this before doing anything else.

• roblox_list_studiosList Studio and StudioMCP processesread-only

  List the local Roblox Studio processes and the StudioMCP broker and stubs. The built-in MCP cannot see this view: it lives inside one Studio process.

• roblox_luau_safeRun Luau in a given place, with errors caught and no output truncationcan change or delete data

  Run Luau in the Studio whose placeId matches. Compared with the built-in execute_luau, it adds three guard rails: (1) **a mandatory placeId guard**: on a mismatch it aborts without running any code; (2) **the whole chunk runs inside one pcall**: a runtime error (for example from touching a protected property such as Lighting.Technology, which execute_luau cannot read because it lacks the RobloxScript capability) is caught and returned as a readable value with ok=false. The code after the error does not run, and changes made before the error are not rolled back; (3) **results are fetched from a…

• roblox_open_placeOpen a given place

  Start a new Studio process that opens the given place, and wait until it registers with the MCP broker. The built-in MCP structurally cannot do this: it lives inside one Studio process and cannot spawn a sibling process. After it reports connected=true, use the built-in MCP's list_roblox_studios to get that instance's studio_id. Warning: this tool never touches window focus at any point; stealing focus can make a stray key press close the place that has just loaded.

• roblox_place_guardConfirm the target place before writingread-only

  Ask each connected Studio in turn, report which one has a `game.PlaceId` equal to the value you want, and give its studio_id. IMPORTANT: **Run this before any write.** The built-in multi_edit writes by path; a wrong studio_id overwrites another game's source code directly, with no undo and no warning of any kind. Warning: `game.Name` is not reliable; in testing, a published place returned `Place1` when opened. Only placeId tells them apart.

• roblox_update_assetUpdate the content of an existing asset in place

  Push new content to the same assetId (this is how the "Package rather than Model" strategy is implemented). IMPORTANT: When the content bytes are identical, Open Cloud **silently deduplicates**: HTTP 200, operation done, no error, but revisionId does not move. This tool automatically compares revisionId before and after the update and reports a verdict; do not use the HTTP status as the success criterion.

• roblox_upload_assetUpload a local file as a new asset

  Create a new asset through Open Cloud assets/v1 (Model accepts .fbx only, Decal accepts common image formats, Audio accepts mp3/ogg). IMPORTANT: An uploaded Model cannot be deleted or archived on the platform; it can only be removed from your own inventory. So when iterating, use roblox_update_asset to update the existing assetId instead of creating a new asset each time. The source file must be a regular file with a single hard link, inside a folder allowed by ROBLOX_UPLOAD_ROOT.

Signals

Stars

1

Forks

0

Open issues

0

Weekly downloads

190

Last commit

Oct 19, 2026 (12 days ago)

Last release

Oct 19, 2026 (12 days ago)

Last package publish

Oct 19, 2026 (12 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name

io.github.gjlmotea/studio-sidecar-for-roblox-studio-mcp

Version

0.1.1

Auth

API key

Packages

npm @gjlmotea/studio-sidecar-mcp

License

MIT

Repository

github.com/gjlmotea/studio-sidecar-mcp

Website

github.com/gjlmotea/studio-sidecar-mcp

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql