unban_member · Discord MCP Server MCP: Risk & Policy

WHAT IT DOES

What unban_member does on Discord MCP Server

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

WHY IT NEEDS A POLICY

Why unban_member needs a policy

Unbanning a member reverses a previous ban, restoring access. This is a reversible modification (the user can be re-banned), so it falls under Write rather than Destructive. The blast radius is medium since it grants server access to a previously removed user, but it does not delete data or perform irreversible harm.

From the tool's definition Remove a ban for a user, allowing them to rejoin the guild

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unban_member Rate-limited

unban_member 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": {
    "unban_member": {
      "limits": [
        {
          "counter": "unban_member_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 MCP Server, so you can run agents against it safely.

FAQ

Questions about unban_member

What does the unban_member tool do? +

Remove a ban for a user, allowing them to rejoin the guild. Requires the BAN_MEMBERS permission. The action is recorded in the audit log. It is categorised as a Write tool in the Discord 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 unban_member? +

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

What risk level is unban_member? +

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

Can I rate-limit unban_member? +

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

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

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