shizuku_restart · Android MCP Server MCP: Risk & Policy

WHAT IT DOES

What shizuku_restart does on Android MCP Server

AI agents invoke shizuku_restart to trigger actions in Android MCP Server. 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 shizuku_restart needs a policy

This tool executes a restart sequence on the Shizuku app, which is a privileged Android service manager. While not destructive in the sense of permanent data loss, restarting a system service can disrupt other operations, affect app availability, and potentially interfere with ongoing processes. The blast radius is high if an agent triggers this unexpectedly, justifying Execute rather than Write.

From the tool's definition Tool name 'shizuku_restart' and description indicate restarting the Shizuku app via force-stop and reopen—actions that trigger external system operations on an Android device.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

shizuku_restart Rate-limited

shizuku_restart 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": {
    "shizuku_restart": {
      "limits": [
        {
          "counter": "shizuku_restart_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 Android MCP Server, so you can run agents against it safely.

FAQ

Questions about shizuku_restart

What does the shizuku_restart tool do? +

重启 Shizuku App（先 force-stop 再重新打开）。. It is categorised as a Execute tool in the Android MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on shizuku_restart? +

Register the Android MCP Server MCP server in PolicyLayer and add a rule for shizuku_restart: 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 Android MCP Server. Nothing to install.

What risk level is shizuku_restart? +

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

Can I rate-limit shizuku_restart? +

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

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

shizuku_restart is provided by the Android MCP Server MCP server (wujie272/android-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.