Ban a member from a Discord guild. Defaults to dry-run mode.
AI agents call discord.member.ban to permanently remove resources in Discord MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Banning a member is a destructive action that removes the member from the guild and prevents them from rejoining. While 'dry-run mode' is the default, the tool's actual purpose is to irreversibly (or at least significantly) restrict a user's access. The blast radius is high as an AI agent could misuse this to ban legitimate members.
From the tool's definition Ban a member from a Discord guild
Documented attack patterns abuse exactly the kind of access discord.member.ban gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Discord MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for discord.member.ban:
{
"version": "1",
"default": "deny",
"hide": [
"discord.member.ban"
]
}discord.member.ban disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Ban a member from a Discord guild. Defaults to dry-run mode. It is categorised as a Destructive tool in the Discord MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Discord MCP Server MCP server in PolicyLayer and add a rule for discord.member.ban: 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.
discord.member.ban is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the discord.member.ban 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.
Set action: deny in the PolicyLayer policy for discord.member.ban. 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.
discord.member.ban is provided by the Discord MCP Server MCP server (rastrian/discordmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Discord MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
45 Discord MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.