updateObject · Maige 3d MCP: Risk & Policy

WHAT IT DOES

What updateObject does on Maige 3d

AI agents use updateObject to create or update resources in Maige 3d — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Maige 3d environment.

WHY IT NEEDS A POLICY

Why updateObject needs a policy

The tool modifies existing 3D scene objects by updating their properties (position, rotation, scale, materials, etc.), making it a Write operation. While reversible (changes can be undone by updating again), the scope is limited to 3D scene state within a controlled canvas environment.

From the tool's definition Tool name 'updateObject' and description 'Update any properties of an existing 3D object. Supports partial updates.' indicate modification of existing data rather than creation, deletion, or execution of external operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

updateObject Rate-limited

updateObject 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": {
    "updateObject": {
      "limits": [
        {
          "counter": "updateobject_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Maige 3d, so you can run agents against it safely.

FAQ

Questions about updateObject

What does the updateObject tool do? +

Update any properties of an existing 3D object. Supports partial updates. It is categorised as a Write tool in the Maige 3d MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on updateObject? +

Register the Maige 3d MCP server in PolicyLayer and add a rule for updateObject: 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 Maige 3d. Nothing to install.

What risk level is updateObject? +

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

Can I rate-limit updateObject? +

Yes. Add a rate_limit block to the updateObject 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 updateObject completely? +

Set action: deny in the PolicyLayer policy for updateObject. 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 updateObject? +

updateObject is provided by the Maige 3d MCP server (m-ai-gexr/mcp-webgpu). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.