assign_label_to_device

Assign a label to a device (preserves existing labels).

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/assign-label-to-device.md

WHAT IT DOES

What assign_label_to_device does on Ha Nexus Agent

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

RISK

Why assign_label_to_device is rated Medium

This tool creates or modifies device metadata (labels) in a reversible way. It does not execute commands, delete data, move money, or trigger external side effects beyond updating a device's label associations in Home Assistant. The blast radius is minimal: incorrect labels affect only information organization and UI presentation, not system behavior or safety-critical operations.

From the tool's definition 'Assign a label to a device' — modifies device metadata by adding a label while preserving existing ones, a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs assign_label_to_device safely

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

assign_label_to_device Rate-limited

assign_label_to_device 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": {
    "assign_label_to_device": {
      "limits": [
        {
          "counter": "assign_label_to_device_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ha Nexus Agent, apply this rule, and every assign_label_to_device call is checked against it from then on.

FAQ

Questions about assign_label_to_device

What does the assign_label_to_device tool do? +

Assign a label to a device (preserves existing labels). It is categorised as a Write tool in the Ha Nexus Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on assign_label_to_device? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for assign_label_to_device: 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 Ha Nexus Agent. Nothing to install.

What risk level is assign_label_to_device? +

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

Can I rate-limit assign_label_to_device? +

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

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

assign_label_to_device is provided by the Ha Nexus Agent MCP server (fistacho/ha-nexus-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ha Nexus Agent, and thousands of servers like it.

This server

All 276 Ha Nexus Agent tools →

Across the catalogue

create-label on Meme MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →