AI agents call xrefs_to_field to retrieve information from Ida Domain without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation to obtain cross-reference information about structure fields in a binary analysis context. It retrieves existing data from IDA Pro's database without creating, modifying, deleting, or executing any operations. The action is passive information retrieval with no side effects.
From the tool's definition Tool name 'xrefs_to_field' and description 'Get cross-references to structure fields' indicate a query operation that retrieves cross-reference data without modifying any state.
Documented attack patterns abuse exactly the kind of access xrefs_to_field gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ida Domain, and nothing reaches the server without passing your rules. This is the rule we recommend for xrefs_to_field:
{
"version": "1",
"default": "deny",
"tools": {
"xrefs_to_field": {}
}
}xrefs_to_field is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get cross-references to structure fields. It is categorised as a Read tool in the Ida Domain MCP Server, which means it retrieves data without modifying state.
Register the Ida Domain MCP server in PolicyLayer and add a rule for xrefs_to_field: 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 Ida Domain. Nothing to install.
xrefs_to_field 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 xrefs_to_field 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 xrefs_to_field. 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.
xrefs_to_field is provided by the Ida Domain MCP server (xxyyue/ida_domain_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ida Domain, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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74 Ida Domain tools catalogued and risk-classified — across an index of 43,000+ MCP servers.