browser_type

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

Annotations already declare the write/destructive nature (readOnlyHint=false, destructiveHint=true), so the description does not need to restate it. The description adds little behavioral context beyond that; it does not say whether existing text is replaced, whether events fire, or whether focus is required, but this is not an annotation contradiction.

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, efficient sentence with no filler or redundancy beyond the title. The added phrase 'into editable element' carries real scoping value.

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?

Given complete schema parameter descriptions and annotations covering the safety profile, the minimal description is largely sufficient for correct invocation. It only falls short on explicit sibling differentiation and behavioral nuances such as replace-vs-append behavior.

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?

Input schema description coverage is 100%, so all five parameters are already documented with their meanings. The description itself adds no parameter semantics, so the baseline score of 3 applies.

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 clear action ('Type text') and the resource ('editable element'), so the tool's core purpose is immediately identifiable. However, it does not distinguish this from sibling tools such as browser_fill_form or browser_press_key, so it lacks sibling differentiation.

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 implies when to use the tool: whenever text needs to be entered into an editable element. It provides no explicit context about when to prefer this over alternatives like browser_fill_form, nor any exclusions, leaving usage selection partly to inference.

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