get_state_history

What get_state_history does on Ha Nexus Agent

AI agents call get_state_history 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.

Why get_state_history is rated Low

This tool retrieves time-series data about entity states from Home Assistant's history database. It has no side effects—it only reads and returns information. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal; an attacker could learn historical patterns of home activity but cannot control devices or change system state.

From the tool's definition Tool name 'get_state_history' and description 'Get state history for an entity over the last N hours' indicate a query operation that retrieves historical state data without modifying, deleting, or executing actions.

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

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

Questions about get_state_history