disable_afk_mode · Memex MCP: Risk & Policy

WHAT IT DOES

What disable_afk_mode does on Memex

AI agents use disable_afk_mode to create or update resources in Memex — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Memex environment.

WHY IT NEEDS A POLICY

Why disable_afk_mode needs a policy

This tool changes the AFK (Away From Keyboard) mode setting, which is a reversible state modification. It is Write category because it updates configuration state. Severity is low because toggling AFK mode has minimal blast radius—it affects only the mode flag, not critical data or operations. The effect is easily reversible via enable_afk_mode.

From the tool's definition Tool modifies state ('Turn off AFK mode') and returns confirmation of state change ('disabled': True). No irreversible data deletion, external code execution, or financial impact.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

disable_afk_mode Rate-limited

disable_afk_mode stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "disable_afk_mode": {
      "limits": [
        {
          "counter": "disable_afk_mode_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about disable_afk_mode

What does the disable_afk_mode tool do? +

Turn off AFK mode. Returns {"disabled": True} when AFK was. It is categorised as a Write tool in the Memex MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on disable_afk_mode? +

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

What risk level is disable_afk_mode? +

disable_afk_mode is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit disable_afk_mode? +

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

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

disable_afk_mode is provided by the Memex MCP server (queflyhq/memex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.