nex_browser_press_key

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only mentions the action and target scope but does not explain event dispatch, focus handling, modifier support, or side effects. This is a significant gap for a keyboard interaction tool.

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 a single concise sentence with no filler, making it efficient. However, it is under-specified; while brevity is good, the sentence could earn its place by including more operational detail without becoming verbose.

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 4 parameters and no output schema or annotations, this description is insufficient. It does not explain return values, prerequisites, or how to construct the 'key' value. The agent is left without critical contextual information needed for reliable invocation.

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 75% (3 of 4 parameters documented), but the required 'key' parameter lacks a schema description and the tool description does not clarify it either. The description adds no extra meaning beyond what the schema already provides, failing to compensate for the undocumented key parameter.

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 clearly states the action ('Press a key') and the target scope ('selected page or focused element'). However, it does not explicitly differentiate itself from sibling tools like nex_browser_key_down or nex_browser_key_up, which are equally plausible for keyboard interactions.

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 provides no guidance on when to use this tool versus alternatives such as nex_browser_type or nex_browser_key_down/up. There are no explicit context cues or exclusions, leaving the agent to infer the appropriate use case.

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