hue_run_query_to_csv · Hue MCP Server MCP: Risk & Policy

WHAT IT DOES

What hue_run_query_to_csv does on Hue MCP Server

AI agents invoke hue_run_query_to_csv to trigger actions in Hue MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why hue_run_query_to_csv needs a policy

This tool executes SQL queries on Hadoop systems (Hive, SparkSQL, Impala), which is an Execute-category action—it triggers external operations whose effects depend on the query arguments provided.

From the tool's definition The tool name 'hue_run_query_to_csv' combined with the server description stating it 'executes SQL queries using Hive, SparkSQL, or Impala' indicates this tool runs queries against data systems.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hue_run_query_to_csv Rate-limited

hue_run_query_to_csv stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hue_run_query_to_csv": {
      "limits": [
        {
          "counter": "hue_run_query_to_csv_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Hue MCP Server, so you can run agents against it safely.

FAQ

Questions about hue_run_query_to_csv

What does the hue_run_query_to_csv tool do? +

hue_run_query_to_csv. It is categorised as a Execute tool in the Hue MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on hue_run_query_to_csv? +

Register the Hue MCP Server MCP server in PolicyLayer and add a rule for hue_run_query_to_csv: 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.

What risk level is hue_run_query_to_csv? +

hue_run_query_to_csv is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit hue_run_query_to_csv? +

Yes. Add a rate_limit block to the hue_run_query_to_csv 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.

How do I block hue_run_query_to_csv completely? +

Set action: deny in the PolicyLayer policy for hue_run_query_to_csv. 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.

What MCP server provides hue_run_query_to_csv? +

hue_run_query_to_csv 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.