Get available device types for simulators
AI agents call xcode_get_device_types to retrieve information from MCP Appium Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves static configuration data (available device types) from Xcode/simulator infrastructure. It performs no writes, deletions, code execution, or financial operations. The operation is read-only with minimal blast radius—returning device type metadata cannot directly harm systems or data even if misused by an AI agent. Classification as Read with low severity is appropriate.
From the tool's definition Tool name 'xcode_get_device_types' and description 'Get available device types for simulators' indicate a query operation that retrieves information about available simulator device types without modifying or executing any actions.
Documented attack patterns abuse exactly the kind of access xcode_get_device_types 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_get_device_types:
{
"version": "1",
"default": "deny",
"tools": {
"xcode_get_device_types": {}
}
}xcode_get_device_types is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get available device types for simulators. It is categorised as a Read tool in the MCP Appium Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Appium Server MCP server in PolicyLayer and add a rule for xcode_get_device_types: 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_get_device_types is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the xcode_get_device_types 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_get_device_types. 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_get_device_types 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.
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110 MCP Appium Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.