arvan_net_whois
WHOIS lookup for a domain or IP (requires the whois binary).
This record as markdown: /tools/dwin-gharibi-arvancloud-mcp/arvan-net-whois.md
What arvan_net_whois does on ArvanCloud MCP Server
AI agents call arvan_net_whois to retrieve information from ArvanCloud MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why arvan_net_whois is rated Low
WHOIS lookups are read-only operations that query public domain registration and IP address ownership information. This is informational retrieval with no side effects, no code execution, and no data modification. The severity is low because WHOIS data is already publicly available and the tool's purpose is passive information retrieval only.
From the tool's definition Tool name 'arvan_net_whois' and description 'WHOIS lookup for a domain or IP' indicate a query operation that retrieves public DNS/registration data without modifying, executing code, or causing side effects.
Attacks that exploit this kind of access
The rule that runs arvan_net_whois safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ArvanCloud MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For arvan_net_whois, this is the rule to start with:
arvan_net_whois 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 ArvanCloud MCP Server, apply this rule, and every arvan_net_whois call is checked against it from then on.
Questions about arvan_net_whois
WHOIS lookup for a domain or IP (requires the whois binary). It is categorised as a Read tool in the ArvanCloud MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ArvanCloud MCP Server MCP server in PolicyLayer and add a rule for arvan_net_whois: 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 ArvanCloud MCP Server. Nothing to install.
arvan_net_whois 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 arvan_net_whois 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 arvan_net_whois. 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.
arvan_net_whois is provided by the ArvanCloud MCP Server MCP server (dwin-gharibi/arvancloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on ArvanCloud MCP Server, and thousands of servers like it.
This server
Across the catalogue