List iOS simulators and Android emulators/devices in a unified format. By default shows booted devices plus the newest-OS variant per device family; pass filter
AI agents call list_devices to retrieve information from React Native Dev without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries the state of available simulators and emulators without performing any state changes, side effects, or triggering operations. It is a straightforward informational/discovery tool. The 'by default shows' and 'pass filter' language confirms it is a read-only query operation.
From the tool's definition Tool name 'list_devices' and description 'List iOS simulators and Android emulators/devices' indicates data retrieval only. No modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
List iOS simulators and Android emulators/devices in a unified format. By default shows booted devices plus the newest-OS variant per device family; pass filter. It is categorised as a Read tool in the React Native Dev MCP Server, which means it retrieves data without modifying state.
Register the React Native Dev MCP server in PolicyLayer and add a rule for list_devices: 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 React Native Dev. Nothing to install.
list_devices 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 list_devices 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 list_devices. 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.
list_devices is provided by the React Native Dev MCP server (luizhbesper/react-native-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_devices is one line of React Native Dev's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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