ui_hide_window

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

No annotations are provided, so the description carries the full burden of explaining side effects and safety. It only says 'Close a main window' and does not clarify whether this hides the window, affects focus, or is reversible, and it uses 'close' rather than the tool name's 'hide' wording.

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 description is very short and front-loaded, with no wasted words; the basic action is immediately clear. However, its terseness sacrifices useful context, so it is efficient but not fully developed.

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?

For a tool with no annotations and no output schema, a single clause is insufficient to know side effects, return behavior, or when to choose among the enum options. The enum provides allowed values, but the description leaves important operational context to inference.

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?

The schema has one required enum parameter, but the description never states that 'name' selects which main window to close or explains what the enum values refer to. With 0% schema-description coverage, the description does not compensate for the missing parameter semantics; only the enum list partially helps.

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 uses a clear verb ('Close') and resource ('a main window'), and the schema's enum makes the intended targets explicit. It is distinguishable from the sibling ui_show_window by its opposite action, though it does not explicitly name that sibling.

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?

There is no guidance about when to call this tool versus ui_show_window or other UI management tools. No prerequisites, exclusions, or alternative conditions are provided, so the agent must infer usage from the name and description alone.

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