AI agents call zone_axfr to retrieve information from Idig Dns without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
While AXFR exposure is a critical DNS misconfiguration that could reveal sensitive domain infrastructure, the tool itself only reads/queries zone data that the nameserver is misconfigured to expose. It does not modify DNS records, execute arbitrary commands, or cause irreversible damage.
From the tool's definition The tool performs a vulnerability check for zone transfers (AXFR) by testing whether authoritative nameservers allow public access. AXFR is a DNS mechanism to retrieve zone data, which is fundamentally a read operation that queries nameserver responses.
Attacks that exploit this kind of access
AXFR zone transfer vulnerability check. Tests whether any authoritative NS allows public zone transfers (critical misconfiguration). It is categorised as a Read tool in the Idig Dns MCP Server, which means it retrieves data without modifying state.
Register the Idig Dns MCP server in PolicyLayer and add a rule for zone_axfr: 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 Idig Dns. Nothing to install.
zone_axfr 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 zone_axfr 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 zone_axfr. 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.
zone_axfr is provided by the Idig Dns MCP server (https://mcp.softricks.net/sse). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
zone_axfr is one line of Idig Dns's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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