update_user_role_permissions

THE RISK

Medium Risk

Why update_user_role_permissions needs a policy

This tool modifies user permissions and roles in a Linode account, which affects access control and security posture. While reversible (making it Write rather than Destructive), the blast radius is high because incorrect permission changes could grant unintended access to cloud infrastructure resources, enable privilege escalation, or lock out legitimate users.

From the tool's definition Tool name 'update_user_role_permissions' indicates modification of user access controls and permissions. The description is truncated ('Update a user\') but the name clearly shows this alters user role permissions, which is a reversible write operation on…

Documented attack patterns abuse exactly the kind of access update_user_role_permissions gives an agent:

POLICY

How to control update_user_role_permissions

PolicyLayer is an MCP gateway — it sits between your AI agents and Linode MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for update_user_role_permissions:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_user_role_permissions": {
      "limits": [
        {
          "counter": "update_user_role_permissions_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

update_user_role_permissions 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.

Create a free account and register Linode MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

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All 416 Linode MCP Server tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about update_user_role_permissions

What does the update_user_role_permissions tool do? +

Update a user\. It is categorised as a Write tool in the Linode 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_role_permissions? +

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

What risk level is update_user_role_permissions? +

update_user_role_permissions 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_permissions? +

Yes. Add a rate_limit block to the update_user_role_permissions 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_permissions completely? +

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

update_user_role_permissions is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Linode MCP Server tool call.

Start from Linode MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →