ui_menu_bar_click

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full behavioral burden and falls short. It does not say whether accessibility permissions are required, whether the target app must be running, what happens if no status item matches, or whether the click is destructive/focus-stealing.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The text is short but not self-contained: it ends in an ellipsis mid-clause, so the sentence never resolves. This is under-specification masquerading as brevity, and the dangling fragment undermines front-loading.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no annotations, no output schema, and a truncated description, an agent lacks everything needed to invoke this reliably: no prerequisites, no failure behavior, no indication of what the 'option' fragment refers to, and no differentiation from ui_click.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Parameter count is zero, which gives a baseline of 4, but the truncated trailing fragment 'and option...' implies options or parameters that do not appear in the empty schema, creating ambiguity rather than clarity. The description adds no usable per-parameter meaning.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description identifies a specific verb (clicks) and a specific resource (menu-bar status item / NSStatusItem at the right of the menu bar), which is more precise than a generic ui_click. However, it is truncated mid-sentence ('and option...'), so the full scope of the action is never stated, and it never explicitly distinguishes itself from the sibling ui_click.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this instead of ui_click, ui_find_element, or ui_keystroke, all of which operate on the same UI surface. The truncation cuts off whatever conditional guidance may have followed 'and option...'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.