browser_press_key

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

No annotations are provided, so the description carries the full disclosure burden, yet it says nothing about where the key press lands (focused element vs. page), whether it triggers default browser behavior, or whether modifier keys/repeats are supported. For an input-synthesis action with zero annotation coverage this is a real gap.

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?

One short, front-loaded sentence with zero wasted words. It is arguably under-specified rather than verbose, but as prose it is efficient and easy to scan.

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 single-parameter input tool with no output schema, the core intent is covered. However, nothing explains focus requirements or side effects of sending a key, which an agent needs to call it correctly in a browser automation flow.

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?

Schema coverage is 100% and the single parameter already documents valid key names like 'ArrowLeft, Enter, a' with an example. The description adds no syntax, modifier, or format detail beyond what the schema provides, so the baseline 3 applies.

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?

States a specific verb (press) and resource (a key on the keyboard), so the action is unambiguous. It does not differentiate from the closely related sibling browser_type, leaving the agent to infer that this is for single key presses (Enter, Tab, ArrowLeft) rather than typing text.

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?

The description gives no when-to-use or when-not-to-use guidance and never names browser_type or browser_select_option as alternatives. The intended context (key press against the currently focused element) is only implied by the phrase 'on the keyboard'.

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