Get Home Assistant configuration
AI agents call tools-system-config to retrieve information from Home Assistant MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves configuration data from Home Assistant without modifying or executing operations. However, Home Assistant configurations may contain sensitive information (API keys, device locations, automation rules, personal settings), justifying a medium severity rating despite the Read category.
From the tool's definition Tool name contains 'get' semantic ("Get Home Assistant configuration") and description indicates data retrieval with no mention of modifications, deletions, or side effects. The tool queries system configuration.
Attacks that exploit this kind of access
Get Home Assistant configuration. It is categorised as a Read tool in the Home Assistant MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Home Assistant MCP Server MCP server in PolicyLayer and add a rule for tools-system-config: 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 Home Assistant MCP Server. Nothing to install.
tools-system-config is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the tools-system-config 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.
Set action: deny in the PolicyLayer policy for tools-system-config. 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.
tools-system-config is provided by the Home Assistant MCP Server MCP server (oleander/home-assistant-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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