ui_menu_bar_click

SERVERLocal SOURCElocal-mcp

High RISK CLASS

Category Execute

Parameters 30 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-local-mcp-local-mcp/ui-menu-bar-click.md

WHAT IT DOES

What ui_menu_bar_click does on Local

AI agents invoke ui_menu_bar_click to trigger actions in Local. 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.

Parameter	Type	Required	Description
`path`	array	—	Nested menu path, e.g. ["App","Settings…"].
`label`	string	—	Status item / menu item title.
`app_bundle_id`	string	—	Owner of the status item.

Parameters from the server's own tool schema.

RISK

Why ui_menu_bar_click is rated High

This tool performs UI automation by clicking menu bar items and navigating nested menus via macOS Accessibility APIs. Clicking menu items can trigger arbitrary application actions — launching processes, modifying settings, deleting files, sending emails, etc. — making this an Execute-class tool with high severity since an AI agent could trigger destructive or sensitive operations through menu interactions.

From the tool's definition Clicks a status-bar (menu bar extra / NSStatusItem) item and optionally follows a nested menu path... Requires Accessibility permission.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ui_menu_bar_click safely

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

ui_menu_bar_click Rate-limited

ui_menu_bar_click 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": {
    "ui_menu_bar_click": {
      "limits": [
        {
          "counter": "ui_menu_bar_click_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 Local, apply this rule, and every ui_menu_bar_click call is checked against it from then on.

FAQ

Questions about ui_menu_bar_click

What does the ui_menu_bar_click tool do? +

Clicks a status-bar (menu bar extra / NSStatusItem) item and optionally follows a nested menu path. Best-effort via the app's AX extras menu bar; apps that render fully custom (non-AX) menus may not be reachable (fall back to ui_click at known coords). Requires Accessibility permission. It is categorised as a Execute tool in the Local MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does ui_menu_bar_click accept? +

ui_menu_bar_click accepts 3 parameters: path, label, app_bundle_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on ui_menu_bar_click? +

Register the Local MCP server in PolicyLayer and add a rule for ui_menu_bar_click: 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 Local. Nothing to install.

What risk level is ui_menu_bar_click? +

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

Can I rate-limit ui_menu_bar_click? +

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

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

ui_menu_bar_click is provided by the Local MCP server (local-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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