list_users · OCI MCP Server MCP: Risk & Policy

WHAT IT DOES

What list_users does on OCI MCP Server

AI agents call list_users to retrieve information from OCI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why list_users needs a policy

This tool retrieves or lists user information from Oracle Cloud Infrastructure without modifying data. While the empty description reduces confidence slightly, the name 'list_users' unambiguously indicates a read operation. Severity is medium because user lists can reveal organizational structure and identity information useful for reconnaissance or social engineering, making misuse moderately concerning.

From the tool's definition Tool name 'list_users' indicates a retrieval operation that queries user data from OCI. The description is empty, but the name and server context (OCI resource management) clearly indicate a read/list operation following standard API patterns.

Attacks that exploit this kind of access

Questions about list_users

What does the list_users tool do? +

list_users. It is categorised as a Read tool in the OCI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_users? +

Register the OCI MCP Server MCP server in PolicyLayer and add a rule for list_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 OCI MCP Server. Nothing to install.

What risk level is list_users? +

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

Can I rate-limit list_users? +

Yes. Add a rate_limit block to the list_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 list_users completely? +

Set action: deny in the PolicyLayer policy for list_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 list_users? +

list_users is provided by the OCI MCP Server MCP server (jopsis/mcp-server-oci). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.