update_user_role · Repsona MCP: Risk & Policy

WHAT IT DOES

What update_user_role does on Repsona

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

WHY IT NEEDS A POLICY

Why update_user_role needs a policy

This tool modifies user roles, which is a reversible Write operation that changes access control settings. While significant and requiring high permissions, it is not Destructive (roles can be changed back), Financial, or Execute (it doesn't run code/commands).

From the tool's definition Tool name 'update_user_role' and description 'updates the role of a specified user (requires Owner/Admin permissions)' indicate modification of user permissions/access control metadata.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_user_role Rate-limited

update_user_role 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_role": {
      "limits": [
        {
          "counter": "update_user_role_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 Repsona, so you can run agents against it safely.

FAQ

Questions about update_user_role

What does the update_user_role tool do? +

指定したユーザーのロールを更新します（Owner/Admin権限が必要）. It is categorised as a Write tool in the Repsona 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_role? +

Register the Repsona MCP server in PolicyLayer and add a rule for update_user_role: 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 Repsona. Nothing to install.

What risk level is update_user_role? +

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

Can I rate-limit update_user_role? +

Yes. Add a rate_limit block to the update_user_role 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_role completely? +

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

update_user_role is provided by the Repsona MCP server (@bellx2/repsona-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.