remote_spy_stop · Dex MCP: Risk & Policy

WHAT IT DOES

What remote_spy_stop does on Dex

AI agents invoke remote_spy_stop to trigger actions in Dex. 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 remote_spy_stop needs a policy

While this tool appears to only stop logging (non-destructive), it is classified as Execute rather than Write because it triggers a state-change action on an active system process rather than modifying persistent data.

From the tool's definition Tool is part of a Roblox debugging server that can 'run Luau in a Roblox client driven by an executor' and manages remote activity logging.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

remote_spy_stop Rate-limited

remote_spy_stop 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": {
    "remote_spy_stop": {
      "limits": [
        {
          "counter": "remote_spy_stop_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 Dex, so you can run agents against it safely.

FAQ

Questions about remote_spy_stop

What does the remote_spy_stop tool do? +

Stop logging remote traffic. It is categorised as a Execute tool in the Dex MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on remote_spy_stop? +

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

What risk level is remote_spy_stop? +

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

Can I rate-limit remote_spy_stop? +

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

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

remote_spy_stop is provided by the Dex MCP server (sanztheo/dex-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.