reload_themes

Reload themes from <config>/themes/. Call after creating or editing theme files.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

High RISK CLASS

Category Execute

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/reload-themes.md

WHAT IT DOES

What reload_themes does on Ha Nexus Agent

AI agents invoke reload_themes to trigger actions in Ha Nexus Agent. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why reload_themes is rated High

This tool triggers a reload operation in Home Assistant, causing the system to re-read and apply theme configuration files. It executes an external operation (reloading system configuration) rather than simply reading or writing data. Misuse could cause visual disruption or apply malicious theme configurations, but blast radius is limited to UI appearance.

From the tool's definition Reload themes from `<config>/themes/`. Call after creating or editing theme files.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

reload_themes Rate-limited

reload_themes stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "reload_themes": {
      "limits": [
        {
          "counter": "reload_themes_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 reload_themes call is checked against it from then on.

FAQ

Questions about reload_themes

What does the reload_themes tool do? +

Reload themes from <config>/themes/. Call after creating or editing theme files. It is categorised as a Execute tool in the Ha Nexus Agent MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on reload_themes? +

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

reload_themes is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit reload_themes? +

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

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

reload_themes 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

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