model_clone · Flex Sensor Agent MCP: Risk & Policy

WHAT IT DOES

What model_clone does on Flex Sensor Agent

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

WHY IT NEEDS A POLICY

Why model_clone needs a policy

Cloning a model creates a new simulation model object (reversible write operation). This is not destructive since the original model persists and the operation can be undone by deleting the clone. It is not Execute since it doesn't run computations or trigger external operations—it merely duplicates an existing model structure.

From the tool's definition Tool named 'model_clone' in a COMSOL simulation server context where sibling tools include 'flex_sensor_build_contact_model' and 'flex_sensor_export_contact_results'. The name 'clone' indicates duplication/copying of a model object, which creates new data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

model_clone Rate-limited

model_clone 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_clone": {
      "limits": [
        {
          "counter": "model_clone_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 Flex Sensor Agent, so you can run agents against it safely.

FAQ

Questions about model_clone

What does the model_clone tool do? +

model_clone. It is categorised as a Write tool in the Flex Sensor Agent 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_clone? +

Register the Flex Sensor Agent MCP server in PolicyLayer and add a rule for model_clone: 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 Flex Sensor Agent. Nothing to install.

What risk level is model_clone? +

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

Can I rate-limit model_clone? +

Yes. Add a rate_limit block to the model_clone 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_clone completely? +

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

model_clone is provided by the Flex Sensor Agent MCP server (tonghui666/flex-sensor-agent-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.