usergroups_list

What usergroups_list does on Slack

AI agents call usergroups_list to retrieve information from Slack without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why usergroups_list is rated Low

This tool retrieves user group information from Slack without modifying data. However, user groups can include sensitive organizational structure and membership information, which elevates severity from 'low' to 'medium' due to potential information disclosure risks if misused by an AI agent to map organizational hierarchies or identify specific users.

From the tool's definition Tool name 'usergroups_list' indicates a listing/query operation. The broader server description mentions 'Slack: messages, channels, files, canvases, lists, search, reactions, and more' where 'lists' and 'search' are explicitly Read operations.

The rule that runs usergroups_list safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Slack, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For usergroups_list, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "usergroups_list": {}
  }
}

Questions about usergroups_list