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slack_get_users

Get a list of all users in the workspace with their basic profile information

SERVERSlack SOURCE@modelcontextprotocol/server-slack
Low RISK CLASS
Category Read
Parameters 00 required
Recommended Allowedsee the rule below
Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/slack/slack-get-users.md

What slack_get_users does on Slack

AI agents call slack_get_users 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 slack_get_users is rated Low

This tool queries and retrieves a list of workspace users and their basic profile information. It performs no mutations, side effects, or destructive operations. While it exposes user information (a potential privacy concern), it remains a read-only operation. The severity is low because basic profile information is typically non-sensitive and discovery of user lists in a workspace is expected functionality.

From the tool's definition Tool name 'slack_get_users' and description 'Get a list of all users in the workspace with their basic profile information' indicate a retrieval operation that returns user data without modifying anything.

Questions about slack_get_users

What does the slack_get_users tool do? +

Get a list of all users in the workspace with their basic profile information. It is categorised as a Read tool in the Slack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on slack_get_users? +

Register the Slack MCP server in PolicyLayer and add a rule for slack_get_users: 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 Slack. Nothing to install.

What risk level is slack_get_users? +

slack_get_users is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit slack_get_users? +

Yes. Add a rate_limit block to the slack_get_users 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.

How do I block slack_get_users completely? +

Set action: deny in the PolicyLayer policy for slack_get_users. 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.

What MCP server provides slack_get_users? +

slack_get_users is provided by the Slack MCP server (@modelcontextprotocol/server-slack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

More on Slack, and thousands of servers like it.

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