stop_robot · NWO Robotics MCP: Risk & Policy

WHAT IT DOES

What stop_robot does on NWO Robotics

AI agents invoke stop_robot to trigger actions in NWO Robotics. 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 stop_robot needs a policy

This tool triggers an external operation (emergency stop) whose effects depend on which robot is targeted and current operational state. While stopping a robot is generally safer than other robot commands, it still executes a consequential physical action in the real world.

From the tool's definition Tool name 'stop_robot' and description 'Emergency stop a robot' indicate execution of a physical action on a real robot device.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

stop_robot Rate-limited

stop_robot 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": {
    "stop_robot": {
      "limits": [
        {
          "counter": "stop_robot_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 NWO Robotics, so you can run agents against it safely.

FAQ

Questions about stop_robot

What does the stop_robot tool do? +

Emergency stop a robot. It is categorised as a Execute tool in the NWO Robotics MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on stop_robot? +

Register the NWO Robotics MCP server in PolicyLayer and add a rule for stop_robot: 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 NWO Robotics. Nothing to install.

What risk level is stop_robot? +

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

Can I rate-limit stop_robot? +

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

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

stop_robot is provided by the NWO Robotics MCP server (redciprianpater/mcp-server-robotics). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.