bgp_lookup

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aaronckj-mcp-nettools/bgp-lookup.md

WHAT IT DOES

What bgp_lookup does on Mcp Nettools

AI agents call bgp_lookup to retrieve information from Mcp Nettools without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why bgp_lookup is rated Low

This tool retrieves and queries publicly available network routing and registration data. It has no side effects, cannot modify infrastructure, and presents minimal risk even if misused by an agent. The worst case would be reconnaissance gathering, but the data is public and the tool itself performs passive queries only.

From the tool's definition Tool performs a lookup query against Team Cymru's WHOIS service returning BGP/ASN metadata (ASN, BGP prefix, country, registry, allocation date, AS organization name).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs bgp_lookup safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Nettools, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For bgp_lookup, this is the rule to start with:

bgp_lookup Allowed

bgp_lookup is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "bgp_lookup": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Nettools, apply this rule, and every bgp_lookup call is checked against it from then on.

FAQ

Questions about bgp_lookup

What does the bgp_lookup tool do? +

Look up BGP/ASN information for a public IP address using Team Cymru's WHOIS service. Returns the ASN, BGP prefix, country, registry, allocation date, and AS organization name. Useful for network forensics, attributing IPs to organizations, and tracing routing paths. It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on bgp_lookup? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for bgp_lookup: 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 Mcp Nettools. Nothing to install.

What risk level is bgp_lookup? +

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

Can I rate-limit bgp_lookup? +

Yes. Add a rate_limit block to the bgp_lookup 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 bgp_lookup completely? +

Set action: deny in the PolicyLayer policy for bgp_lookup. 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 bgp_lookup? +

bgp_lookup is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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