WHOIS lookup by IP address or IP range.
AI agents call whois_lookup_by_ip to retrieve information from IPInfo MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only WHOIS query to retrieve public registry information about IP addresses and ranges. It has no capability to modify, delete, or execute operations. The data retrieved is public domain information already published in WHOIS databases.
From the tool's definition WHOIS lookup by IP address or IP range - retrieves registration and ownership information about IP addresses without modifying data.
Attacks that exploit this kind of access
WHOIS lookup by IP address or IP range. It is categorised as a Read tool in the IPInfo MCP Server MCP Server, which means it retrieves data without modifying state.
Register the IPInfo MCP Server MCP server in PolicyLayer and add a rule for whois_lookup_by_ip: 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 IPInfo MCP Server. Nothing to install.
whois_lookup_by_ip 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 whois_lookup_by_ip 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 whois_lookup_by_ip. 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.
whois_lookup_by_ip is provided by the IPInfo MCP Server MCP server (nimblebraininc/mcp-ipinfo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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