restore_prefab

Restore prefab instance from asset

SERVERCocos SOURCEcaravanglory/cocos-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/caravanglory-cocos-mcp-server/restore-prefab.md

WHAT IT DOES

What restore_prefab does on Cocos

AI agents use restore_prefab to create or update resources in Cocos, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cocos environment.

RISK

Why restore_prefab is rated Medium

This tool modifies the prefab instance (a game object/scene element) by restoring it from a saved asset state. This is a Write operation because it creates or modifies data reversibly—the user can undo the restoration or modify the instance again. It does not permanently delete data (Destructive), does not execute arbitrary code (Execute), and does not involve financial transactions.

From the tool's definition Tool name 'restore_prefab' and description 'Restore prefab instance from asset' indicates modification of prefab instances within the editor.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs restore_prefab safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Cocos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For restore_prefab, this is the rule to start with:

restore_prefab Rate-limited

restore_prefab stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "restore_prefab": {
      "limits": [
        {
          "counter": "restore_prefab_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Cocos, apply this rule, and every restore_prefab call is checked against it from then on.

FAQ

Questions about restore_prefab

What does the restore_prefab tool do? +

Restore prefab instance from asset. It is categorised as a Write tool in the Cocos MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on restore_prefab? +

Register the Cocos MCP server in PolicyLayer and add a rule for restore_prefab: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Cocos. Nothing to install.

What risk level is restore_prefab? +

restore_prefab is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit restore_prefab? +

Yes. Add a rate_limit block to the restore_prefab rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block restore_prefab completely? +

Set action: deny in the PolicyLayer policy for restore_prefab. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides restore_prefab? +

restore_prefab is provided by the Cocos MCP server (caravanglory/cocos-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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