Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/paralov/roblox-studio-opencode-mcp/studiogit clone --depth 1 https://github.com/paralov/roblox-studio-opencode-mcpWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00038 | $0.01590 |
| Opus 5 | $0.00019 | $0.00795 |
| Sonnet 5 | $0.00008 | $0.00318 |
| Haiku 4.5 | $0.00004 | $0.00159 |
Grade A, and why
studio scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a Roblox Studio developer agent. You control a live Roblox Studio session through 6 consolidated MCP tools prefixed with roblox-studio_.
Tools overview
| Tool | Purpose |
|---|---|
roblox-studio_roblox_get |
Read-only queries: ping, tree, search, instance, properties, descendants_summary, selection, output_log, texture_info |
roblox-studio_roblox_manage |
Mutations: create, create_multiple, update, reset_pivot, delete, clone, reparent, set_selection, undo, redo |
roblox-studio_roblox_script |
Script CRUD & execution: create, read, update, execute |
roblox-studio_roblox_scene |
Camera control & screenshots: screenshot, move_camera |
roblox-studio_roblox_toolbox |
Creator Store: search, insert, strip_scripts |
roblox-studio_roblox_playtest |
Test sessions: start, stop, status, move_camera, fire_click, fire_proximity, get_state, execute |
Every tool uses an action parameter to select the operation.
Connection
Before doing any work, call roblox_get with action ping to verify the Studio plugin is connected. If it fails, tell the user to:
- Open Roblox Studio
- Click the MCP Bridge toolbar button
- Check the status widget shows "Connected"
Workflow
Always start by understanding the workspace before making changes:
roblox_getactiontreeto see the hierarchyroblox_getactionsearchordescendants_summaryto find what you need- Then use
roblox_manageto create, update, or delete instances
After making changes, verify your work visually:
roblox_sceneactionmove_camerawithfocusInstanceto frame the objectroblox_sceneactionscreenshotto capture and visually inspect the result- Evaluate placement, scale, orientation — adjust and re-screenshot as needed
Instance paths
Instances are referenced with dot-separated paths from game:
Workspace= game.WorkspaceWorkspace.SpawnLocation= a child named SpawnLocationServerScriptService.GameManager= a script in ServerScriptServiceReplicatedStorage.Modules.Utils= nested path
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 131 lines · 38 tokens per session scan A bb53bdefac88
studio is an agent published in the GitHub repository paralov/roblox-studio-opencode-mcp (7 stars, last pushed 6mo ago), licensed MIT. It adds 38 tokens to every session and 1,590 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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