redo · Maige 3d MCP: Risk & Policy

WHAT IT DOES

What redo does on Maige 3d

AI agents use redo 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 redo needs a policy

The redo operation restores a previously applied scene change, constituting a Write action—it modifies the 3D scene state. It is not Destructive because the operation is fully reversible (undo can be called again). Severity is medium because misuse could alter the 3D scene in unintended ways, but the impact is confined to the 3D canvas and can be easily reversed.

From the tool's definition Tool name 'redo' and description 'Redo a previously undone scene change' indicate it reverts an undo operation, modifying the 3D scene state by reapplying a change. This is reversible (can be undone again) and modifies scene data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

redo Rate-limited

redo 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": {
    "redo": {
      "limits": [
        {
          "counter": "redo_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 redo

What does the redo tool do? +

Redo a previously undone scene change. 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 redo? +

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

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

Can I rate-limit redo? +

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

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

redo 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.