model_web_import · Open Brush MCP Server MCP: Risk & Policy

WHAT IT DOES

What model_web_import does on Open Brush MCP Server

AI agents use model_web_import to create or update resources in Open Brush MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Open Brush MCP Server environment.

WHY IT NEEDS A POLICY

Why model_web_import needs a policy

This tool creates new content in the canvas by importing 3D models, which is a reversible modification (Write category). Severity is medium because importing untrusted models could consume resources or cause application instability, but the effect is contained within the Open Brush session and can be undone.

From the tool's definition Tool name 'model_web_import' and description 'Imports a 3D model from URL or local file' indicate it adds/modifies the drawing canvas by importing external 3D models into Open Brush.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

model_web_import Rate-limited

model_web_import 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": {
    "model_web_import": {
      "limits": [
        {
          "counter": "model_web_import_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 Open Brush MCP Server, so you can run agents against it safely.

FAQ

Questions about model_web_import

What does the model_web_import tool do? +

Imports a 3D model from URL or local file. It is categorised as a Write tool in the Open Brush MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on model_web_import? +

Register the Open Brush MCP Server MCP server in PolicyLayer and add a rule for model_web_import: 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 Open Brush MCP Server. Nothing to install.

What risk level is model_web_import? +

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

Can I rate-limit model_web_import? +

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

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

model_web_import is provided by the Open Brush MCP Server MCP server (moz411/openbrush-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.