click

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

No annotations are provided, so the description carries the full burden. It discloses the two input mechanisms but does not state what happens when both are provided, whether the element must be visible or attached, what errors can occur, or what the click triggers. The wording is minimal rather than behaviorally transparent.

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?

A single sentence with no filler, and the core scoping information is front-loaded. It is appropriately concise, though it could carry a bit more useful context without becoming bloated.

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 click tool the definition is close to adequate, but it lacks usage context, parameter precedence, error behavior, and return value information. With no output schema or annotations, the description does not fully stand alone.

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 0% and the parameters are bare strings. The description adds useful meaning by clarifying that selector means a CSS selector and ref means a ref from snapshot, but it leaves format, optionality, and precedence unspecified.

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 specific verb 'Click' with the resource 'an element' and clearly identifies the two targeting mechanisms (CSS selector or ref). This is enough to distinguish it from sibling tools like hover, type, and press_key.

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 is given on when to use click over sibling tools, when to prefer ref over selector, or whether certain conditions must be met before clicking. There are no exclusions, alternatives, or prerequisites described.

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