update-user-roles · Advanced Keycloak MCP server MCP

WHAT IT DOES

What update-user-roles does on Advanced Keycloak MCP server

AI agents use update-user-roles to create or update resources in Advanced Keycloak MCP server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Advanced Keycloak MCP server environment.

WHY IT NEEDS A POLICY

Why update-user-roles needs a policy

This tool modifies user role assignments, which controls access permissions in a Keycloak system. While role changes are reversible (can be added back), they directly affect authorization and security posture. The tool is Write category because it creates/modifies data (role assignments) reversibly.

From the tool's definition Tool description states 'Add and/or remove client roles for a user' - this modifies user access control permissions which are critical security attributes that have durable effects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update-user-roles Rate-limited

update-user-roles stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update-user-roles": {
      "limits": [
        {
          "counter": "update-user-roles_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Advanced Keycloak MCP server, so you can run agents against it safely.

FAQ

Questions about update-user-roles

What does the update-user-roles tool do? +

Add and/or remove client roles for a user in a specific realm and client. It is categorised as a Write tool in the Advanced Keycloak MCP server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update-user-roles? +

Register the Advanced Keycloak MCP server MCP server in PolicyLayer and add a rule for update-user-roles: 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.

What risk level is update-user-roles? +

update-user-roles is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update-user-roles? +

Yes. Add a rate_limit block to the update-user-roles 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.

How do I block update-user-roles completely? +

Set action: deny in the PolicyLayer policy for update-user-roles. 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.

What MCP server provides update-user-roles? +

update-user-roles 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.