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browser_switch_to_window_by_url

Switch browser focus to a window with a specific URL. Useful for managing multiple open windows or tabs during automated testing by targeting the desired window based on its URL.

Instructions

Switch to a window by its URL

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesThe URL of the window to switch to
Behavior2/5

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

No annotations provided, so description must cover behavioral aspects. It does not disclose what happens if no window matches the URL, whether it can match partial URLs, or any side effects. This is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Extremely concise—single sentence that directly states the tool's function. No unnecessary words, but lacks depth.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simplicity, the description could still be more complete. It omits expected behavior like error handling when no window matches, or the possibility of multiple matches. Sibling tools with similar complexity often have more detailed descriptions.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema has 100% coverage for the 'url' parameter with a clear description. The tool description does not add additional meaning beyond stating the method of switching.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states action and method (by URL). Distinguishes from sibling tools that switch by title or index, but relies on name for differentiation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives like browser_switch_to_window_by_title or browser_switch_window_by_index. Missing context on prerequisites or appropriate scenarios.

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

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