browser_switchTab

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

With no annotations and no mention of side effects, error behavior, or whether the browser waits for the tab to be ready, the description only states the bare action.

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, focused sentence with no filler, making it easy to parse.

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 one-parameter tab-switch tool, the description plus schema is largely complete, though it would benefit from noting out-of-range or invalid index 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?

The input schema already documents the 'index' parameter and its 0-based meaning, so the description adds no extra parameter semantics beyond what is already available.

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 'Switch to the tab at the specified index (0-based)' states a specific action and resource, clearly distinguishing this from sibling tools like newTab and closeTab.

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 about when to use this tool versus alternatives, nor about how the index relates to the current tab list or what happens with an invalid index.

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