hue_list_directory
AI agents call hue_list_directory to retrieve information from Hue MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Directory listing retrieves information without modifying data or triggering external operations. The blast radius of misuse is minimal—an attacker could enumerate file structures to plan further attacks, but the tool itself cannot alter, delete, or execute anything. Low severity reflects the informational nature of the operation.
From the tool's definition Tool name 'hue_list_directory' and context of sibling tools (hue_check_directory_exists, hue_download_directory, hue_download_file) indicate this lists or enumerates directory contents.
Attacks that exploit this kind of access
hue_list_directory. It is categorised as a Read tool in the Hue MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Hue MCP Server MCP server in PolicyLayer and add a rule for hue_list_directory: 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 Hue MCP Server. Nothing to install.
hue_list_directory 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 hue_list_directory 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 hue_list_directory. 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.
hue_list_directory is provided by the Hue MCP Server MCP server (spanishst/hueclientrest-mpc). 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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