AI agents call revoke_role_from_user to permanently remove resources in Mcp Windows — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Revoking a role from a user removes their permissions/access rights in the database. This is effectively irreversible in the sense that it removes granted privileges without any automatic restoration path. The blast radius is high because misuse could lock out users from critical systems or databases, and the action cannot be undone without explicit re-granting.
From the tool's definition 'Revoke a role from a user' — permanently removes an access role/privilege from a MySQL user account
Documented attack patterns abuse exactly the kind of access revoke_role_from_user gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Windows, and nothing reaches the server without passing your rules. This is the rule we recommend for revoke_role_from_user:
{
"version": "1",
"default": "deny",
"hide": [
"revoke_role_from_user"
]
}revoke_role_from_user disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Revoke a role from a user (MySQL 8.0+). It is categorised as a Destructive tool in the Mcp Windows MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Windows MCP server in PolicyLayer and add a rule for revoke_role_from_user: 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 Windows. Nothing to install.
revoke_role_from_user is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the revoke_role_from_user 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 revoke_role_from_user. 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.
revoke_role_from_user is provided by the Mcp Windows MCP server (mukul975/mcp-windows-automation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 441 Mcp Windows tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
441 Mcp Windows tools catalogued and risk-classified — across an index of 42,500+ MCP servers.