AI agents call irr_as_set_expand 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.
IRR AS-SET expansion is a standard network read operation that resolves the members of an AS-SET object in the Internet Routing Registry. This is a non-destructive, read-only lookup. Confidence is low because the description is empty, but the tool name strongly implies a query/read operation consistent with the server's BGP/network analysis theme.
From the tool's definition Tool name 'irr_as_set_expand' suggests expanding an IRR (Internet Routing Registry) AS-SET, which is a read/query operation against routing registry data.
Attacks that exploit this kind of access
irr_as_set_expand. 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 irr_as_set_expand: 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.
irr_as_set_expand 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 irr_as_set_expand 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 irr_as_set_expand. 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.
irr_as_set_expand 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.
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