Get information about the currently active window
AI agents call get_active_window to retrieve information from Windows MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and returns data about the active window state. It performs no modifications, deletions, code execution, or external operations. It is a simple read-only query that poses minimal security risk even if misused by an AI agent.
From the tool's definition Tool name is 'get_active_window' and description states it 'Get information about the currently active window' — a pure information retrieval operation with no side effects.
Attacks that exploit this kind of access
Get information about the currently active window. It is categorised as a Read tool in the Windows MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Windows MCP Server MCP server in PolicyLayer and add a rule for get_active_window: 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 Windows MCP Server. Nothing to install.
get_active_window 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 get_active_window 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 get_active_window. 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.
get_active_window is provided by the Windows MCP Server MCP server (romeo2badboy-rgb/windows-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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