AI agents call discord_get_user to retrieve information from Sage MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves user profile information from Discord for the authenticated user. It performs a simple query/fetch operation with no capability to modify, delete, or execute actions. The scope is limited to reading the authenticated user's own data, making it a Read category tool with low severity as the information accessed is limited to the caller's own account details.
From the tool's definition Tool name 'discord_get_user' and description 'Get information about the current authenticated user' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access discord_get_user gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Sage MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for discord_get_user:
{
"version": "1",
"default": "deny",
"tools": {
"discord_get_user": {}
}
}discord_get_user is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get information about the current authenticated user. It is categorised as a Read tool in the Sage MCP MCP Server, which means it retrieves data without modifying state.
Register the Sage MCP server in PolicyLayer and add a rule for discord_get_user: 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 Sage MCP. Nothing to install.
discord_get_user 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_user 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_user. 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_user is provided by the Sage MCP server (sagemcp/sagemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 359 Sage MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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359 Sage MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.