roles_clear · Claude Role Library MCP: Risk & Policy

WHAT IT DOES

What roles_clear does on Claude Role Library

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

WHY IT NEEDS A POLICY

Why roles_clear needs a policy

This tool deactivates/clears the currently active role, which is a reversible state change (you can re-apply a role afterward). It modifies application state but does not permanently delete any stored role data. The blast radius is low since it only affects the active session role, which can easily be restored.

From the tool's definition Clear the currently active role

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

roles_clear Rate-limited

roles_clear 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": {
    "roles_clear": {
      "limits": [
        {
          "counter": "roles_clear_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 Claude Role Library, so you can run agents against it safely.

FAQ

Questions about roles_clear

What does the roles_clear tool do? +

Clear the currently active role. It is categorised as a Write tool in the Claude Role Library MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on roles_clear? +

Register the Claude Role Library MCP server in PolicyLayer and add a rule for roles_clear: 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 Claude Role Library. Nothing to install.

What risk level is roles_clear? +

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

Can I rate-limit roles_clear? +

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

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

roles_clear is provided by the Claude Role Library MCP server (tony427/claude-role-library). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.