stop_heating

Switch the hotplate heater off (STOP_1). Stirring continues. The plate stays hot for a

SERVERPypi:labmcp Alicat SOURCEpypi:labmcp-alicat

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/lab-instrument-mcps/stop-heating.md

WHAT IT DOES

What stop_heating does on Pypi:labmcp Alicat

AI agents invoke stop_heating to trigger actions in Pypi:labmcp Alicat. 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.

RISK

Why stop_heating is rated High

Triggers external hardware operation (hotplate) with reversible but consequential physical effects on experiments.

From the tool's definition Switch the hotplate heater off; lab instrument control with physical effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs stop_heating safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Pypi:labmcp Alicat, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stop_heating, this is the rule to start with:

stop_heating Rate-limited

stop_heating 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": {
    "stop_heating": {
      "limits": [
        {
          "counter": "stop_heating_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Pypi:labmcp Alicat, apply this rule, and every stop_heating call is checked against it from then on.

FAQ

Questions about stop_heating

What does the stop_heating tool do? +

Switch the hotplate heater off (STOP_1). Stirring continues. The plate stays hot for a. It is categorised as a Execute tool in the Pypi:labmcp Alicat MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on stop_heating? +

Register the Pypi:labmcp Alicat MCP server in PolicyLayer and add a rule for stop_heating: 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 Pypi:labmcp Alicat. Nothing to install.

What risk level is stop_heating? +

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

Can I rate-limit stop_heating? +

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

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

stop_heating is provided by the Pypi:labmcp Alicat MCP server (pypi:labmcp-alicat). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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stop_emba_scan on EMBA-MCP → All high-risk MCP tools → The MCP Attack Database →

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