keyboard_type

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

With no annotations, the description is the only source of behavioral information. It states the core behavior (simulating typed keystrokes), but does not disclose details like whether special characters are handled literally, whether the active window must remain focused during typing, or that this can trigger keyboard shortcuts in the target application.

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, front-loaded sentence with no redundant words. Every part contributes to understanding the tool's action and target.

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 simple one-parameter tool, the description plus the fully covered schema is nearly complete. The main missing piece is an explicit note that the target window must remain focused and that there is no return value, but the low complexity keeps the gap minor.

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%, so the 'text' parameter is already documented as 'Text to type.' The description adds no extra meaning about encoding, special-character handling, or length limits beyond the schema, so the baseline of 3 is appropriate.

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 names a specific verb ('simulate'), a specific resource ('keyboard typing'), and the target context ('active window'), which clearly distinguishes it from pointer-input siblings like mouse_move/mouse_click and from file-writing tools. An agent can immediately know what this tool is for.

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 phrase 'on active window' gives implied context: this tool is appropriate only when the intended target is the currently focused GUI window. However, there is no explicit guidance about when to choose this over alternatives such as write_file or write_clipboard, and no mention of the prerequisite that focus must be maintained.

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