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

No annotations are provided, so the description carries the full behavioral burden. It implies a browser interaction that changes select state but does not disclose side effects, event triggering, waiting behavior, permissions, or what is returned on success/failure.

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 wasted words, but it is under-specified for a four-parameter browser-interaction tool. Conciseness is achieved at the cost of necessary detail.

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?

With no annotations, no output schema, and low parameter coverage, the description does not provide enough context for reliable invocation. It lacks usage conditions, parameter semantics, and behavioral details that an agent would need.

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 description coverage is only 25%; only notification_message is documented in the schema. The description mentions 'select ref' but gives no meaning for values_json (format, multi-select behavior, encoding), tab_id, or ref beyond the word 'select'.

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 (select options) on a specific resource type (a select ref), so an agent can understand the basic operation. It does not, however, distinguish this tool from nearby alternatives like browser_fill or browser_dom_input.

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 on when to use this tool instead of browser_fill, browser_dom_input, browser_click, or browser_type. It also omits prerequisites such as whether the ref must point to a <select> element or whether the tab must already exist.

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