lvgl_get_styles

Get LVGL theme and style definitions from an ESPHome device config.

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/lvgl-get-styles.md

WHAT IT DOES

What lvgl_get_styles does on Ha Nexus Agent

AI agents call lvgl_get_styles 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 lvgl_get_styles is rated Low

This tool queries and retrieves style/theme configuration data from an ESPHome device. The 'get' verb and description confirm it performs read-only data retrieval with no side effects, reversible operations, code execution, data destruction, or financial impact.

From the tool's definition Tool name contains 'get' and description states 'Get LVGL theme and style definitions' — retrieves data from ESPHome device config with no modification, deletion, or execution capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

lvgl_get_styles Allowed

lvgl_get_styles 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": {
    "lvgl_get_styles": {}
  }
}

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 lvgl_get_styles call is checked against it from then on.

FAQ

Questions about lvgl_get_styles

What does the lvgl_get_styles tool do? +

Get LVGL theme and style definitions from an ESPHome device config. 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 lvgl_get_styles? +

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

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

Can I rate-limit lvgl_get_styles? +

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

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

lvgl_get_styles 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.

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