AI agents call xcode_uninstall_app to permanently remove resources in MCP Appium Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Uninstalling an app is a destructive operation because it permanently removes the application and its data from the simulator environment. This action cannot be reversed through normal means and represents a loss of state. While not as severe as deleting data files directly, app uninstallation is categorically destructive as it irreversibly removes software and associated state.
From the tool's definition Tool name 'xcode_uninstall_app' explicitly performs an uninstall operation, which removes an application from a simulator.
Documented attack patterns abuse exactly the kind of access xcode_uninstall_app gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Appium Server, and nothing reaches the server without passing your rules. This is the rule we recommend for xcode_uninstall_app:
{
"version": "1",
"default": "deny",
"hide": [
"xcode_uninstall_app"
]
}xcode_uninstall_app disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Uninstall an app from a simulator. It is categorised as a Destructive tool in the MCP Appium Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP Appium Server MCP server in PolicyLayer and add a rule for xcode_uninstall_app: 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 MCP Appium Server. Nothing to install.
xcode_uninstall_app is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the xcode_uninstall_app 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.
Set action: deny in the PolicyLayer policy for xcode_uninstall_app. 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.
xcode_uninstall_app is provided by the MCP Appium Server MCP server (rahulec08/appium-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 110 MCP Appium Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
110 MCP Appium Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.