get_states

Get all entity states via WebSocket (faster than REST for large installs).

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/get-states.md

WHAT IT DOES

What get_states does on Ha Nexus Agent

AI agents call get_states to retrieve information from Ha Nexus Agent without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_states is rated Low

This tool queries the state of entities in Home Assistant without creating, modifying, deleting, or executing any actions. It is a read-only operation that fetches current state information. The choice of WebSocket over REST is an implementation detail for performance and does not change the nature of the operation.

From the tool's definition Tool name is 'get_states' and description states it retrieves 'all entity states' via WebSocket. The verb 'Get' and phrasing 'retrieves' indicate data retrieval with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_states 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 get_states, this is the rule to start with:

get_states Allowed

get_states is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_states": {}
  }
}

ALLOW ONLY 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 get_states call is checked against it from then on.

FAQ

Questions about get_states

What does the get_states tool do? +

Get all entity states via WebSocket (faster than REST for large installs). It is categorised as a Read tool in the Ha Nexus Agent MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_states? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for get_states: 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 get_states? +

get_states is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_states? +

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

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

get_states 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

get_cocktail_by_category on Cocktails RAG MCP Server →get_torrent_detail on M-Team MCP Server →aiva_get_affiliate on AIVA MCP Server →get-chuck-categories on Jokes MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →