AI agents call list_group_users to retrieve information from Okta MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves user data from a group without creating, modifying, deleting, or executing any operations. It is a straightforward data retrieval function with minimal security risk, appropriate for informational queries about group membership.
From the tool's definition Tool name 'list_group_users' and description 'List all users in a specific group' indicate a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access list_group_users gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Okta MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_group_users:
{
"version": "1",
"default": "deny",
"tools": {
"list_group_users": {}
}
}list_group_users is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all users in a specific group. It is categorised as a Read tool in the Okta MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Okta MCP Server MCP server in PolicyLayer and add a rule for list_group_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 Okta MCP Server. Nothing to install.
list_group_users 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_group_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.
Set action: deny in the PolicyLayer policy for list_group_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.
list_group_users is provided by the Okta MCP Server MCP server (kapilduraphe/okta-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Okta MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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21 Okta MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.