edit_role · Discord MCP: Risk & Policy

WHAT IT DOES

What edit_role does on Discord

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

WHY IT NEEDS A POLICY

Why edit_role needs a policy

The tool modifies role attributes (permissions, color, name, etc.) but does not delete roles or cause irreversible changes. However, severity is high because editing roles can broadly impact access control and permissions for multiple server members, creating significant blast radius if misused by an AI agent (e.g., elevating a compromised role's permissions, removing key restrictions).

From the tool's definition Tool name 'edit_role' and description 'Edit an existing role in a Discord server' indicate modification of existing access control structures. This is a write operation that modifies role properties reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

edit_role Rate-limited

edit_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": {
    "edit_role": {
      "limits": [
        {
          "counter": "edit_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 Discord, so you can run agents against it safely.

FAQ

Questions about edit_role

What does the edit_role tool do? +

Edit an existing role in a Discord server. It is categorised as a Write tool in the Discord MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on edit_role? +

Register the Discord MCP server in PolicyLayer and add a rule for edit_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 Discord. Nothing to install.

What risk level is edit_role? +

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

Can I rate-limit edit_role? +

Yes. Add a rate_limit block to the edit_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 edit_role completely? +

Set action: deny in the PolicyLayer policy for edit_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 edit_role? +

edit_role is provided by the Discord MCP server (ngoctranfire/discord-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.