set_script_config

Create or overwrite a script YAML config (sequence, fields, ...). Auto-reloads scripts.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Medium RISK CLASS

Category Write

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/set-script-config.md

WHAT IT DOES

What set_script_config does on Ha Nexus Agent

AI agents use set_script_config to create or update resources in Ha Nexus Agent, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ha Nexus Agent environment.

RISK

Why set_script_config is rated Medium

This tool creates or modifies script configurations in Home Assistant, which affects smart home automation behavior. While 'overwrite' might suggest destructive intent, the operation is reversible (configs can be rewritten again), and the primary purpose is data modification rather than deletion. Categorized as Write rather than Destructive because the previous config state can be recovered or reconfigured.

From the tool's definition Tool description explicitly states "Create or overwrite a script YAML config" — overwrite indicates modification of existing data. The auto-reload behavior suggests immediate application of changes to live automation logic.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

set_script_config Rate-limited

set_script_config stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_script_config": {
      "limits": [
        {
          "counter": "set_script_config_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 set_script_config call is checked against it from then on.

FAQ

Questions about set_script_config

What does the set_script_config tool do? +

Create or overwrite a script YAML config (sequence, fields, ...). Auto-reloads scripts. It is categorised as a Write tool in the Ha Nexus Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_script_config? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for set_script_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 Ha Nexus Agent. Nothing to install.

What risk level is set_script_config? +

set_script_config is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_script_config? +

Yes. Add a rate_limit block to the set_script_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.

How do I block set_script_config completely? +

Set action: deny in the PolicyLayer policy for set_script_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.

What MCP server provides set_script_config? +

set_script_config 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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