AI agents call discord_list_guilds to retrieve information from Discord without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of servers without modifying, executing, or destructively affecting any data. It is a read-only operation analogous to 'list' or 'get'. While the server itself violates Discord ToS by using a selfbot, the individual tool's capability is limited to information retrieval, making it a Read category risk.
From the tool's definition Tool name 'discord_list_guilds' and description 'List all Discord servers (guilds) the user is a member of' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all Discord servers (guilds) the user is a member of. It is categorised as a Read tool in the Discord MCP Server, which means it retrieves data without modifying state.
Register the Discord MCP server in PolicyLayer and add a rule for discord_list_guilds: 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.
discord_list_guilds 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 discord_list_guilds 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_list_guilds. 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_list_guilds is provided by the Discord MCP server (tensakulabs/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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