send_motion_command · Ros MCP: Risk & Policy

WHAT IT DOES

What send_motion_command does on Ros

AI agents invoke send_motion_command to trigger actions in Ros. 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 send_motion_command needs a policy

This tool directly controls physical robot movement by publishing motion commands. It triggers real-world actuation of an Autonomous Mobile Robot, which can cause physical harm to people, property, or the robot itself if misused. The effects are immediate and physical, making it Execute category with critical severity due to the potential for real-world damage.

From the tool's definition Publish a JSON Twist command for direct robot motion

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_motion_command Rate-limited

send_motion_command 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": {
    "send_motion_command": {
      "limits": [
        {
          "counter": "send_motion_command_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, so you can run agents against it safely.

FAQ

Questions about send_motion_command

What does the send_motion_command tool do? +

Publish a JSON Twist command for direct robot motion. It is categorised as a Execute tool in the Ros MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on send_motion_command? +

Register the Ros MCP server in PolicyLayer and add a rule for send_motion_command: 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 send_motion_command? +

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

Can I rate-limit send_motion_command? +

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

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

send_motion_command 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.

// THE FULL RECORD

send_motion_command is one line of Ros's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →