Delete a user from a specific realm
AI agents call delete-user to permanently remove resources in Advanced Keycloak MCP server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
User deletion is an irreversible operation that permanently removes identity data from the Keycloak realm. If an AI agent misuses this tool with incorrect parameters, it could remove legitimate user accounts, disrupting authentication and access for affected users. This is a destructive action that cannot be undone through normal means and could impact security posture and system availability.
From the tool's definition Tool name is 'delete-user' and description states 'Delete a user from a specific realm'. The verb 'delete' combined with the irreversible nature of user deletion from an identity management system indicates a destructive operation.
Attacks that exploit this kind of access
Delete a user from a specific realm. It is categorised as a Destructive tool in the Advanced Keycloak MCP server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Advanced Keycloak MCP server MCP server in PolicyLayer and add a rule for delete-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 Advanced Keycloak MCP server. Nothing to install.
delete-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 delete-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 delete-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.
delete-user is provided by the Advanced Keycloak MCP server MCP server (octodet/keycloak-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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