delete_css_custom_property

Delete a CSS custom property.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/delete-css-custom-property.md

WHAT IT DOES

What delete_css_custom_property does on Ha Nexus Agent

AI agents call delete_css_custom_property to permanently remove resources in Ha Nexus Agent, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_css_custom_property is rated Critical

The tool is explicitly named 'delete_*' and performs irreversible removal of configuration data (CSS custom property). While the blast radius is limited (CSS styling only, not core home automation functions), deletion operations are categorized as Destructive per the classification schema.

From the tool's definition delete_css_custom_property performs deletion of a CSS custom property, which cannot be undone without re-adding it manually.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

delete_css_custom_property Hidden

delete_css_custom_property is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_css_custom_property"
  ]
}

RESTRICT 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 delete_css_custom_property call is checked against it from then on.

FAQ

Questions about delete_css_custom_property

What does the delete_css_custom_property tool do? +

Delete a CSS custom property. It is categorised as a Destructive tool in the Ha Nexus Agent MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_css_custom_property? +

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

delete_css_custom_property is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_css_custom_property? +

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

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

delete_css_custom_property 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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