list_keys
AI agents call list_keys to retrieve information from Windows Operations MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Presumed to be a read-only operation that enumerates system keys (likely Registry keys in Windows context). Read operations have low inherent severity, but elevated to medium because exposing registry keys could reveal sensitive system configuration, credentials paths, or security settings that an AI agent might misuse or leak.
From the tool's definition Tool named 'list_keys' with no description provided. In Windows/Registry context, 'list_keys' typically retrieves Registry keys or similar system configuration data without modification.
Attacks that exploit this kind of access
list_keys. It is categorised as a Read tool in the Windows Operations MCP MCP Server, which means it retrieves data without modifying state.
Register the Windows Operations MCP server in PolicyLayer and add a rule for list_keys: 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 Operations MCP. Nothing to install.
list_keys 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_keys 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_keys. 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_keys is provided by the Windows Operations MCP server (sandraschi/windows-operations-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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