hue_download_directory
AI agents call hue_download_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.
The tool downloads a directory, which is a retrieval operation with no side effects on the source data. It fits the Read category: fetches/queries data without creating, modifying, or deleting anything. Severity is low because downloading files cannot harm data integrity, though sensitivity of downloaded data could vary by deployment context.
From the tool's definition Tool name 'hue_download_directory' and sibling tools like 'hue_download_file', 'hue_list_directory', and 'hue_export_and_download' indicate this retrieves data from HDFS without modification.
Attacks that exploit this kind of access
hue_download_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_download_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_download_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_download_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_download_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_download_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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