AI agents call xref_matrix 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.
The xref_matrix tool performs analysis of cross-references in a reverse engineering context (consistent with IDA Pro, a disassembler/debugger). This is a passive data retrieval and analysis operation that queries and displays relationships between code/data entities without creating side effects, modifying the database, executing code, or deleting anything.
From the tool's definition Tool builds a matrix showing cross-references between entities; this is purely informational analysis of existing data with no modification, deletion, or code execution.
Documented attack patterns abuse exactly the kind of access xref_matrix 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 xref_matrix:
{
"version": "1",
"default": "deny",
"tools": {
"xref_matrix": {}
}
}xref_matrix is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Build matrix showing cross-references between entities. 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 xref_matrix: 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.
xref_matrix 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 xref_matrix 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 xref_matrix. 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.
xref_matrix 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.
Free to start. No card required.
74 Ida Domain tools catalogued and risk-classified — across an index of 43,000+ MCP servers.