AI agents call rpki_roa_lookup 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 retrieves and queries RPKI validation data. The verb 'look up' combined with 'for a prefix or ASN' clearly indicates a read-only data retrieval operation that does not modify, delete, or execute any state-changing operations. It aligns with the Read category definition of retrieving or querying data with no side effects.
From the tool's definition Tool name 'rpki_roa_lookup' and description 'Look up RPKI ROAs for a prefix or ASN' indicate a query/lookup operation.
Attacks that exploit this kind of access
Look up RPKI ROAs for a prefix or ASN. 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 rpki_roa_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 Net. Nothing to install.
rpki_roa_lookup 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 rpki_roa_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.
Set action: deny in the PolicyLayer policy for rpki_roa_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.
rpki_roa_lookup 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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