This record as markdown: /tools/ikuai-mcp-server/list-vpn-servers.md
What list_vpn_servers does on Ikuai
AI agents call list_vpn_servers to retrieve information from Ikuai without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_vpn_servers is rated Low
This tool queries and returns the status of VPN servers configured on the router. It performs a read-only operation that retrieves information without modifying any configuration or state. However, severity is rated medium rather than low because VPN server status information could reveal network architecture, tunnel endpoints, and active connection details that could inform further attacks on network infrastructure.
From the tool's definition Tool name 'list_vpn_servers' and description '列出所有 VPN 服务端状态' (list all VPN server status) indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs list_vpn_servers safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ikuai, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_vpn_servers, this is the rule to start with:
list_vpn_servers is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Ikuai, apply this rule, and every list_vpn_servers call is checked against it from then on.
Questions about list_vpn_servers
列出所有 VPN 服务端状态. It is categorised as a Read tool in the Ikuai MCP Server, which means it retrieves data without modifying state.
Register the Ikuai MCP server in PolicyLayer and add a rule for list_vpn_servers: 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 Ikuai. Nothing to install.
list_vpn_servers 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_vpn_servers 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_vpn_servers. 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_vpn_servers is provided by the Ikuai MCP server (gxxHuang/ikuai-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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