AI agents call discord_get_role_members 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 only retrieves information about role membership without modifying any data or triggering actions. It is a read-only query operation with no side effects, fitting the 'Read' category. Severity is low because exposure of member lists, while potentially revealing user information, does not enable destructive or harmful actions by itself.
From the tool's definition Tool description states it 'List members who currently hold a specific role' and 'Returns { members: [...], truncated }' — these are query/retrieval operations with no modification, deletion, or execution of code.
Attacks that exploit this kind of access
List members who currently hold a specific role, scanning up to 20,000 members. Returns { members: [...], truncated } — check. 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_get_role_members: 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_get_role_members 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_get_role_members 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_get_role_members. 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_get_role_members 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.
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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