AI agents call bgp_prefix_origin to retrieve information from Net without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries public BGP data to identify the autonomous systems originating a given IP prefix. It is a read-only lookup operation comparable to the sibling tools bgp_route_lookup and bgp_asn_info, which perform similar informational queries against network routing data. No data is created, modified, deleted, or executed—only retrieved from authoritative sources like RIPE.
From the tool's definition Tool name 'bgp_prefix_origin' and description 'Find which AS(es) originate a given prefix' indicate a query-only operation that retrieves BGP routing information. No side effects, modifications, or destructive actions are performed.
Attacks that exploit this kind of access
Find which AS(es) originate a given prefix. It is categorised as a Read tool in the Net MCP Server, which means it retrieves data without modifying state.
Register the Net MCP server in PolicyLayer and add a rule for bgp_prefix_origin: 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 Net. Nothing to install.
bgp_prefix_origin 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 bgp_prefix_origin 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 bgp_prefix_origin. 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.
bgp_prefix_origin is provided by the Net MCP server (steelcutoatmeal/net-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →