hue_execute_query · Hue MCP Server MCP: Risk & Policy

WHAT IT DOES

What hue_execute_query does on Hue MCP Server

AI agents invoke hue_execute_query 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_execute_query needs a policy

This tool executes arbitrary SQL queries against Hadoop data systems (Hive, SparkSQL, Impala). SQL query execution is a classic Execute category action because the effects depend entirely on the query content—it can read, modify, delete, or corrupt data depending on what query an AI agent constructs.

From the tool's definition Server description states the tool enables 'executing SQL queries using Hive, SparkSQL, or Impala.' The tool name 'hue_execute_query' directly indicates query execution.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hue_execute_query Rate-limited

hue_execute_query 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_execute_query": {
      "limits": [
        {
          "counter": "hue_execute_query_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_execute_query

What does the hue_execute_query tool do? +

hue_execute_query. 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_execute_query? +

Register the Hue MCP Server MCP server in PolicyLayer and add a rule for hue_execute_query: 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_execute_query? +

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

Can I rate-limit hue_execute_query? +

Yes. Add a rate_limit block to the hue_execute_query 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_execute_query completely? +

Set action: deny in the PolicyLayer policy for hue_execute_query. 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_execute_query? +

hue_execute_query 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.