local_utility_open

Open About or Files using local installed commands, or focus an exact existing class. An optional Files directory is validated and always opens a new window.

SERVEROmarchy-MCP SOURCEhlsitechio/Omarchy-MCP

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/omarchy-mcp/local-utility-open.md

WHAT IT DOES

What local_utility_open does on Omarchy-MCP

AI agents invoke local_utility_open to trigger actions in Omarchy-MCP. 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 local_utility_open is rated High

Runs local installed commands to open applications or focus windows on the desktop.

From the tool's definition Open About or Files using local installed commands, or focus an exact existing class

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs local_utility_open safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Omarchy-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For local_utility_open, this is the rule to start with:

local_utility_open Rate-limited

local_utility_open 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": {
    "local_utility_open": {
      "limits": [
        {
          "counter": "local_utility_open_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 Omarchy-MCP, apply this rule, and every local_utility_open call is checked against it from then on.

FAQ

Questions about local_utility_open

What does the local_utility_open tool do? +

Open About or Files using local installed commands, or focus an exact existing class. An optional Files directory is validated and always opens a new window. It is categorised as a Execute tool in the Omarchy-MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on local_utility_open? +

Register the Omarchy MCP server in PolicyLayer and add a rule for local_utility_open: 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 Omarchy-MCP. Nothing to install.

What risk level is local_utility_open? +

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

Can I rate-limit local_utility_open? +

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

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

local_utility_open is provided by the Omarchy MCP server (hlsitechio/Omarchy-MCP). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Omarchy, and thousands of servers like it.

This server

All 466 Omarchy tools → High-risk tools on this server →

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All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →