Touchpoint

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

No annotations provided, so description carries full burden. States the immediate action but omits error behavior (unfocusable elements), return value details, or side effects. Lacks disclosure on whether operation is synchronous.

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?

Extremely compact at two lines. Front-loaded action statement followed by Args documentation. Efficient though Args format is slightly informal (docstring style).

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?

Adequate for a single-parameter tool with output schema available elsewhere. However, given zero annotation coverage and complete absence of schema descriptions, description should ideally cover behavioral constraints or error cases.

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 has 0% description coverage (element_id undescribed in schema). Description compensates by documenting the single parameter as 'The element ID to focus,' providing necessary semantic context missing from structured data.

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 specific action (Move) on specific resource (keyboard focus) with target (element). Clear and actionable, though could better differentiate from sibling click or activate_window.

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 versus click, set_value, or activate_window. No mention of focusability requirements or visibility prerequisites.

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