mode_air_purifier

THE RISK

High Risk

Why mode_air_purifier needs a policy

This tool sends commands to a physical air purifier device to change its operating mode via Home Assistant. It is an Execute-category action because it triggers an external operation on a real-world device. The blast radius is medium — misuse could disrupt air quality settings or cause unnecessary energy use, but it is not destructive or financial in nature.

From the tool's definition 控制空气净化器运行模式的流程 — 'controls the operating mode of the air purifier'; triggers an external operation on a physical smart home device

Documented attack patterns abuse exactly the kind of access mode_air_purifier gives an agent:

POLICY

How to control mode_air_purifier

PolicyLayer is an MCP gateway — it sits between your AI agents and Jenius MCP Smart Device, and nothing reaches the server without passing your rules. This is the rule we recommend for mode_air_purifier:

policy.json

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

mode_air_purifier 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.

Create a free account and register Jenius MCP Smart Device — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in Jenius MCP Smart Device → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about mode_air_purifier

What does the mode_air_purifier tool do? +

控制空气净化器运行模式的流程。请根据用户的需求抽取参数，控制设备。. It is categorised as a Execute tool in the Jenius MCP Smart Device MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on mode_air_purifier? +

Register the Jenius MCP Smart Device MCP server in PolicyLayer and add a rule for mode_air_purifier: 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 Jenius MCP Smart Device. Nothing to install.

What risk level is mode_air_purifier? +

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

Can I rate-limit mode_air_purifier? +

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

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

mode_air_purifier is provided by the Jenius MCP Smart Device MCP server (jenius-group/jenius-mcp-smart-device). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Jenius MCP Smart Device tool call.

Start from Jenius MCP Smart Device, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →