app_restart

Force-stop then re-launch an app. Common pattern for clearing in-memory state without uninstall.

SERVERClaude Mobile SOURCEalexgladkov/claude-in-mobile

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/alexgladkov-claude-in-mobile/app-restart.md

WHAT IT DOES

What app_restart does on Claude Mobile

AI agents invoke app_restart to trigger actions in Claude Mobile. 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.

RISK

Why app_restart is rated High

This tool triggers device-level operations that alter running process state. While not permanently destructive (the app data persists), it is an Execute action because it runs/stops system processes.

From the tool's definition 'Force-stop then re-launch an app' — the tool executes external operations (stopping and launching processes) on a mobile device whose effects depend on which app is targeted. This is mobile process control, not data retrieval or creation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs app_restart safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Claude Mobile, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For app_restart, this is the rule to start with:

app_restart Rate-limited

app_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": {
    "app_restart": {
      "limits": [
        {
          "counter": "app_restart_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Claude Mobile, apply this rule, and every app_restart call is checked against it from then on.

FAQ

Questions about app_restart

What does the app_restart tool do? +

Force-stop then re-launch an app. Common pattern for clearing in-memory state without uninstall. It is categorised as a Execute tool in the Claude Mobile MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on app_restart? +

Register the Claude Mobile MCP server in PolicyLayer and add a rule for app_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 Claude Mobile. Nothing to install.

What risk level is app_restart? +

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

Can I rate-limit app_restart? +

Yes. Add a rate_limit block to the app_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 app_restart completely? +

Set action: deny in the PolicyLayer policy for app_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 app_restart? +

app_restart is provided by the Claude Mobile MCP server (alexgladkov/claude-in-mobile). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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