ros_set_param · ROS1 Noetic MCP Server MCP: Risk & Policy

WHAT IT DOES

What ros_set_param does on ROS1 Noetic MCP Server

AI agents use ros_set_param to create or update resources in ROS1 Noetic MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ROS1 Noetic MCP Server environment.

WHY IT NEEDS A POLICY

Why ros_set_param needs a policy

This tool writes configuration parameters to the ROS parameter server, which can alter the behavior of running robotic systems. Misconfiguration could cause robots to behave unexpectedly or dangerously, but the action is technically reversible (parameters can be reset), placing it in Write rather than Destructive.

From the tool's definition 'Set a ROS parameter value' — explicitly modifies ROS parameter server state

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ros_set_param Rate-limited

ros_set_param 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": {
    "ros_set_param": {
      "limits": [
        {
          "counter": "ros_set_param_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 ROS1 Noetic MCP Server, so you can run agents against it safely.

FAQ

Questions about ros_set_param

What does the ros_set_param tool do? +

Set a ROS parameter value. It is categorised as a Write tool in the ROS1 Noetic 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 ros_set_param? +

Register the ROS1 Noetic MCP Server MCP server in PolicyLayer and add a rule for ros_set_param: 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 ROS1 Noetic MCP Server. Nothing to install.

What risk level is ros_set_param? +

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

Can I rate-limit ros_set_param? +

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

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

ros_set_param is provided by the ROS1 Noetic MCP Server MCP server (lopisan/ros-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.