list_config_files

List files in the HA config directory (or a subdirectory).

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/list-config-files.md

WHAT IT DOES

What list_config_files does on Ha Nexus Agent

AI agents call list_config_files 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 list_config_files is rated Low

This tool queries and retrieves file listings from the Home Assistant configuration directory. While it is a read-only operation with no side effects, the severity is elevated to medium because Home Assistant config directories typically contain sensitive information such as API keys, authentication tokens, automations, security configurations, and personal data.

From the tool's definition List files in the HA config directory (or a subdirectory) — retrieves directory contents without modification

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_config_files Allowed

list_config_files 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": {
    "list_config_files": {}
  }
}

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 list_config_files call is checked against it from then on.

FAQ

Questions about list_config_files

What does the list_config_files tool do? +

List files in the HA config directory (or a subdirectory). 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 list_config_files? +

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

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

Can I rate-limit list_config_files? +

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

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

list_config_files 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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