uninstall_addon

Uninstall an add-on. DANGEROUS — requires confirm=True.

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/uninstall-addon.md

WHAT IT DOES

What uninstall_addon does on Ha Nexus Agent

AI agents call uninstall_addon 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 uninstall_addon is rated Critical

Uninstalling an add-on is a destructive operation that cannot be automatically reversed. It removes software components from the system, potentially disrupting smart home automation, losing configurations, or disabling critical integrations. While Home Assistant may allow reinstallation, the act of uninstallation itself destroys the current state.

From the tool's definition 'Uninstall an add-on. DANGEROUS — requires confirm=True.' — the tool irreversibly removes an add-on from the Home Assistant installation, and the description explicitly labels it as DANGEROUS.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

uninstall_addon Hidden

uninstall_addon 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": [
    "uninstall_addon"
  ]
}

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 uninstall_addon call is checked against it from then on.

FAQ

Questions about uninstall_addon

What does the uninstall_addon tool do? +

Uninstall an add-on. DANGEROUS — requires confirm=True. 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 uninstall_addon? +

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

uninstall_addon 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 uninstall_addon? +

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

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

uninstall_addon 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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