List all roles in a guild, sorted by position.
AI agents call list_roles 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 performs a read-only operation that queries and returns existing role information. It has no side effects, cannot modify data, and poses minimal risk. The blast radius of misuse is limited to information disclosure about the guild's role structure, which is typically low-severity.
From the tool's definition Tool name 'list_roles' and description 'List all roles in a guild, sorted by position' indicate a query operation that retrieves role data without modifying or deleting anything.
Attacks that exploit this kind of access
List all roles in a guild, sorted by position. 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_roles: 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_roles 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_roles 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_roles. 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_roles 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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