set_heating_mode · Zont MCP: Risk & Policy

WHAT IT DOES

What set_heating_mode does on Zont

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

WHY IT NEEDS A POLICY

Why set_heating_mode needs a policy

The tool name strongly implies it changes the heating mode on a ZONT heating system. This is a Write operation (modifying device state/configuration). The description is empty, which lowers confidence, but in context of a heating control server, misuse could affect physical heating systems — potentially causing discomfort, equipment stress, or safety issues — making severity high.

From the tool's definition Tool name: set_heating_mode; server controls heating systems via REST API

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_heating_mode Rate-limited

set_heating_mode 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_heating_mode": {
      "limits": [
        {
          "counter": "set_heating_mode_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about set_heating_mode

What does the set_heating_mode tool do? +

set_heating_mode. It is categorised as a Write tool in the Zont 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_heating_mode? +

Register the Zont MCP server in PolicyLayer and add a rule for set_heating_mode: 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 Zont. Nothing to install.

What risk level is set_heating_mode? +

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

Can I rate-limit set_heating_mode? +

Yes. Add a rate_limit block to the set_heating_mode 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_heating_mode completely? +

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

set_heating_mode is provided by the Zont MCP server (mab2908/zont-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.