AI agents call list_domain_controllers to retrieve information from BloodHound MCP 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 to enumerate domain controllers in an Active Directory environment. While the information could be reconnaissance for an attacker, the tool itself only retrieves data without side effects, modification, or execution. The BloodHound context suggests security analysis, but the specific tool is purely informational.
From the tool's definition The tool name 'list_domain_controllers' and description 'List domain controller(s)' indicate a query operation that retrieves information about domain controllers from Active Directory.
Documented attack patterns abuse exactly the kind of access list_domain_controllers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and BloodHound MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for list_domain_controllers:
{
"version": "1",
"default": "deny",
"tools": {
"list_domain_controllers": {}
}
}list_domain_controllers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List domain controller(s). It is categorised as a Read tool in the BloodHound MCP MCP Server, which means it retrieves data without modifying state.
Register the BloodHound MCP server in PolicyLayer and add a rule for list_domain_controllers: 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 BloodHound MCP. Nothing to install.
list_domain_controllers 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 list_domain_controllers 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 list_domain_controllers. 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.
list_domain_controllers is provided by the BloodHound MCP server (stevenyu113228/bloodhound-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 106 BloodHound MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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106 BloodHound MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.