updateLight · Maige 3d MCP: Risk & Policy

WHAT IT DOES

What updateLight does on Maige 3d

AI agents use updateLight 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 updateLight needs a policy

Updating a light's properties (intensity, color, position, etc.) in a 3D scene is a reversible modification that creates no side effects beyond the intended scene change. It does not execute arbitrary code, delete data, involve financial transactions, or trigger external operations. This is a standard Write operation within the 3D scene manipulation domain.

From the tool's definition Tool description states 'Update an existing light by id' — this modifies an existing scene element (a light) reversibly without deletion or code execution.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

updateLight Rate-limited

updateLight 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": {
    "updateLight": {
      "limits": [
        {
          "counter": "updatelight_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 updateLight

What does the updateLight tool do? +

Update an existing light by id. 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 updateLight? +

Register the Maige 3d MCP server in PolicyLayer and add a rule for updateLight: 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 updateLight? +

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

Can I rate-limit updateLight? +

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

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

updateLight 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.