click

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

With no annotations, the description carries the full burden of behavioral disclosure. It does not mention side effects such as navigation, event triggers, waiting behavior, or failure modes like hidden or non-clickable elements. The description names the action but exposes nothing about its runtime behavior beyond the arguments.

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 appropriately terse and front-loaded. The main action appears first, followed by a minimal argument breakdown, with no redundant or decorative wording. Every sentence adds needed information.

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, two-parameter click action, the description plus input schema is largely sufficient. The output schema reduces the need to describe return values. However, the missing usage-side guidance and behavioral caveats mean it is not fully complete, though the low complexity here keeps the gap small.

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?

The input schema has 0% description coverage, so the description must compensate. It does: it explains that selector is CSS or XPath and that by is limited to 'css' or 'xpath', adding semantic meaning beyond the raw schema fields and defaults.

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 states a specific action ('Click') and a specific target ('an element'), which immediately distinguishes it from siblings like type_text, get_text, and screenshot. The first line is unambiguous and defines exactly what the tool does.

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?

There is no guidance about when to use this tool versus alternatives, nor any exclusionary conditions. An agent must infer from the tool name and sibling list that this is the action for clicking an element. No context about preconditions or alternatives is provided.

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