Open new Chrome tab

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

With no annotations, the description is the sole behavioral source. It accurately conveys the core behavior and the optional blank-tab behavior, but it does not disclose whether Chrome is launched if not running, whether the window is focused, or how errors are handled. Adequate for a simple tool but not fully transparent.

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?

A single sentence that is direct, front-loaded, and free of filler. Every word contributes to understanding the action and the optional parameter behavior.

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 tool with one optional parameter and no output schema, the description and schema together provide enough information to invoke it correctly. Minor gaps remain around preconditions and result behavior, but they are not blocking for this simple operation.

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 coverage is 100% and the only parameter, url, already has a clear description. The tool description just paraphrases the schema ('optionally navigating to a URL') without adding new semantic detail, so the baseline 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 clearly states the action ('Open') and the resource ('a new Chrome tab'), and the optional URL navigation adds precision. The phrase 'new tab' distinguishes it from sibling operations like close, focus, or scroll on Chrome tabs.

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 intended use is implied: when the user wants to open a new Chrome tab, possibly with a URL. However, it does not explicitly guide the agent on when to prefer this over related tools such as open_chrome_profile or focus_chrome_tab, and it offers no exclusion criteria.

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