set_led · Tractive MCP: Risk & Policy

WHAT IT DOES

What set_led does on Tractive

AI agents invoke set_led to trigger actions in Tractive. 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 set_led needs a policy

This tool triggers an external operation on a physical device (the GPS tracker), turning its LED on or off. It doesn't merely read data, nor does it write data reversibly in a software sense — it actuates hardware. This classifies as Execute since it triggers an external operation on a real-world device. Misuse could drain battery or signal the pet's presence/absence, but the blast radius is limited.

From the tool's definition Turn the tracker LED light on or off

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_led Rate-limited

set_led 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": {
    "set_led": {
      "limits": [
        {
          "counter": "set_led_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 Tractive, so you can run agents against it safely.

FAQ

Questions about set_led

What does the set_led tool do? +

Turn the tracker LED light on or off. It is categorised as a Execute tool in the Tractive MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_led? +

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

What risk level is set_led? +

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

Can I rate-limit set_led? +

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

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

set_led is provided by the Tractive MCP server (rexchoppers/tractive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.