List all banned users in the guild. Returns usernames, IDs, and ban reasons. Requires the BAN_MEMBERS permission.
AI agents call list_bans to retrieve information from Discord MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves a list of banned users with associated metadata (usernames, IDs, ban reasons). It performs no modifications, deletions, or actions that alter server state. Although it requires BAN_MEMBERS permission and deals with security-sensitive information, the operation itself is read-only data retrieval.
From the tool's definition Tool name 'list_bans' and description 'List all banned users in the guild. Returns usernames, IDs, and ban reasons.' indicates a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all banned users in the guild. Returns usernames, IDs, and ban reasons. Requires the BAN_MEMBERS permission. It is categorised as a Read tool in the Discord MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Discord MCP Server MCP server in PolicyLayer and add a rule for list_bans: 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.
list_bans is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_bans 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 list_bans. 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.
list_bans 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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