set_role_groups · Looker MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_role_groups does on Looker MCP Server

AI agents use set_role_groups to create or update resources in Looker MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Looker MCP Server environment.

WHY IT NEEDS A POLICY

Why set_role_groups needs a policy

The name 'set_role_groups' indicates assignment or configuration of roles to groups. In Looker's admin context, this modifies access control assignments. While the description is empty (lowering confidence slightly), the semantic context of sibling user-administration tools and the explicit 'administering users' capability strongly suggest this performs reversible Write operations on user roles/permissions.

From the tool's definition Tool name 'set_role_groups' with empty description. Based on sibling tools like 'add_group_user' and the server's stated capability to 'administering users', this tool likely modifies user group-role mappings, which is a Write operation (reversible…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_role_groups Rate-limited

set_role_groups 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": {
    "set_role_groups": {
      "limits": [
        {
          "counter": "set_role_groups_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 Looker MCP Server, so you can run agents against it safely.

FAQ

Questions about set_role_groups

What does the set_role_groups tool do? +

set_role_groups. It is categorised as a Write tool in the Looker 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 set_role_groups? +

Register the Looker MCP Server MCP server in PolicyLayer and add a rule for set_role_groups: 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 Looker MCP Server. Nothing to install.

What risk level is set_role_groups? +

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

Can I rate-limit set_role_groups? +

Yes. Add a rate_limit block to the set_role_groups 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 set_role_groups completely? +

Set action: deny in the PolicyLayer policy for set_role_groups. 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 set_role_groups? +

set_role_groups is provided by the Looker MCP Server MCP server (ultrathink-solutions/looker-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.