AI agents call registry_get_users to retrieve information from Windows Forensics MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and queries existing registry data to enumerate user accounts. It performs no write, execute, destructive, or financial operations. The operation is forensic analysis of local system state with no side effects.
From the tool's definition Tool name 'registry_get_users' and description 'Get user accounts from SAM hive' indicate retrieval of user account information from the Windows SAM (Security Account Manager) registry hive without modification or deletion.
Documented attack patterns abuse exactly the kind of access registry_get_users gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Windows Forensics MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for registry_get_users:
{
"version": "1",
"default": "deny",
"tools": {
"registry_get_users": {}
}
}registry_get_users is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get user accounts from SAM hive. It is categorised as a Read tool in the Windows Forensics MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Windows Forensics MCP Server MCP server in PolicyLayer and add a rule for registry_get_users: 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 Forensics MCP Server. Nothing to install.
registry_get_users 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 registry_get_users 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 registry_get_users. 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.
registry_get_users is provided by the Windows Forensics MCP Server MCP server (x746b/winforensics-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Windows Forensics MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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61 Windows Forensics MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.