joy_turn_left · ROS MCP Server MCP: Risk & Policy

WHAT IT DOES

What joy_turn_left does on ROS MCP Server

AI agents invoke joy_turn_left to trigger actions in ROS MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why joy_turn_left needs a policy

This tool triggers external robot operations whose physical effects depend on execution context and timing. While not destructive or financial, it executes real-world actions on robotic hardware. Misuse could cause the robot to collide with obstacles, people, or property, creating safety hazards. The blast radius includes physical damage and potential injury, warranting high severity classification.

From the tool's definition Tool name 'joy_turn_left' and description '机器人左转' (robot turn left) indicate direct control of robot movement.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

joy_turn_left Rate-limited

joy_turn_left stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "joy_turn_left": {
      "limits": [
        {
          "counter": "joy_turn_left_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about joy_turn_left

What does the joy_turn_left tool do? +

机器人左转. It is categorised as a Execute tool in the ROS MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on joy_turn_left? +

Register the ROS MCP Server MCP server in PolicyLayer and add a rule for joy_turn_left: 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 MCP Server. Nothing to install.

What risk level is joy_turn_left? +

joy_turn_left is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit joy_turn_left? +

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

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

joy_turn_left is provided by the ROS MCP Server MCP server (moneypiaorui/ros-mcp-server-minipi). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.