discord_unban_member · Discord MCP: Risk & Policy

WHAT IT DOES

What discord_unban_member does on Discord

AI agents use discord_unban_member 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 discord_unban_member needs a policy

This tool modifies server state by removing a ban restriction on a member, allowing them to rejoin. It is reversible (the user can be re-banned if needed), making it Write rather than Destructive. While it affects access controls, the impact is limited to a single user's membership status and is fully auditable.

From the tool's definition Lift a ban so the user may rejoin via a new invite. Requires the Ban Members permission. Reverses discord_ban_member. The reason is recorded in the audit log.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

discord_unban_member Rate-limited

discord_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": {
    "discord_unban_member": {
      "limits": [
        {
          "counter": "discord_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, so you can run agents against it safely.

FAQ

Questions about discord_unban_member

What does the discord_unban_member tool do? +

Lift a ban so the user may rejoin via a new invite. Requires the Ban Members permission. Reverses discord_ban_member. The reason is recorded in the audit log. 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 discord_unban_member? +

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

What risk level is discord_unban_member? +

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

Can I rate-limit discord_unban_member? +

Yes. Add a rate_limit block to the discord_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 discord_unban_member completely? +

Set action: deny in the PolicyLayer policy for discord_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 discord_unban_member? +

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