physics_add · Flex Sensor Agent MCP: Risk & Policy

WHAT IT DOES

What physics_add does on Flex Sensor Agent

AI agents use physics_add 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 physics_add needs a policy

Based on the tool name 'physics_add' in the context of a COMSOL Multiphysics simulation server, this tool likely adds a physics interface or module to a simulation model, which is a write/create operation. However, the empty description significantly lowers confidence. It does not appear destructive, financial, or executable in the code-execution sense.

From the tool's definition Tool name 'physics_add' suggests adding a physics component; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

physics_add Rate-limited

physics_add 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": {
    "physics_add": {
      "limits": [
        {
          "counter": "physics_add_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 physics_add

What does the physics_add tool do? +

physics_add. 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 physics_add? +

Register the Flex Sensor Agent MCP server in PolicyLayer and add a rule for physics_add: 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 physics_add? +

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

Can I rate-limit physics_add? +

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

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

physics_add 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.