set_color_temp · Philips Hue MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_color_temp does on Philips Hue MCP Server

AI agents use set_color_temp to create or update resources in Philips Hue MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Philips Hue MCP Server environment.

WHY IT NEEDS A POLICY

Why set_color_temp needs a policy

This tool modifies a light's color temperature setting, which is a reversible write operation. It changes device state but causes no data loss, financial impact, or irreversible effects. Misuse has minimal blast radius — worst case is an undesired lighting color.

From the tool's definition Set the color temperature of a light in mireds (153=cold, 500=warm)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_color_temp Rate-limited

set_color_temp stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_color_temp": {
      "limits": [
        {
          "counter": "set_color_temp_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about set_color_temp

What does the set_color_temp tool do? +

Set the color temperature of a light in mireds (153=cold, 500=warm). It is categorised as a Write tool in the Philips Hue MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_color_temp? +

Register the Philips Hue MCP Server MCP server in PolicyLayer and add a rule for set_color_temp: 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 Philips Hue MCP Server. Nothing to install.

What risk level is set_color_temp? +

set_color_temp is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_color_temp? +

Yes. Add a rate_limit block to the set_color_temp 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 set_color_temp completely? +

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

set_color_temp is provided by the Philips Hue MCP Server MCP server (pedrof/hue-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.