change_robot_id · Ros MCP: Risk & Policy

WHAT IT DOES

What change_robot_id does on Ros

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

WHY IT NEEDS A POLICY

Why change_robot_id needs a policy

Changing a robot ID is a system configuration write operation that alters how the robot is identified within the fleet/MQTT system. This could cause significant operational disruption (commands routed to wrong robot, loss of control) if misused, warranting high severity. It is reversible in principle (you can change it back), so it falls under Write rather than Destructive.

From the tool's definition 'Request a robot-id change and wait for the system result' — modifies the robot's identity configuration

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

change_robot_id Rate-limited

change_robot_id 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": {
    "change_robot_id": {
      "limits": [
        {
          "counter": "change_robot_id_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Ros, so you can run agents against it safely.

FAQ

Questions about change_robot_id

What does the change_robot_id tool do? +

Request a robot-id change and wait for the system result. It is categorised as a Write tool in the Ros MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on change_robot_id? +

Register the Ros MCP server in PolicyLayer and add a rule for change_robot_id: 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 Ros. Nothing to install.

What risk level is change_robot_id? +

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

Can I rate-limit change_robot_id? +

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

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

change_robot_id is provided by the Ros MCP server (reidlo5135/ros-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.