chrome_navigate

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only states the action without mentioning side effects, asynchronous behavior, or that it can target a different tab via tab_index. There is no mention of return values, errors, or impact on browser history.

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, concise sentence that clearly communicates the primary function. It is front-loaded and contains no unnecessary words or repetition.

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?

The tool is straightforward and the schema covers all parameters. However, the description lacks context about observable behavior, such as whether navigation is asynchronous, what the return value is, or how tab_index affects the action. It is adequate but leaves some behavioral questions unanswered.

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 schema provides complete descriptions for all parameters, so the baseline is 3. The description adds no additional parameter semantics beyond what the schema already provides. For instance, the active tab default is already documented in the tab_index parameter description.

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 tool navigates a tab to a URL, using a specific verb and resource. It distinguishes from sibling navigation tools like back/forward/reload by focusing on loading arbitrary URLs. Although it omits the optional tab_index parameter, the primary purpose is unambiguous.

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 explicit guidance is given on when to use this tool versus alternatives. The intended use is implied by the description—navigate to a URL—but there is no mention of exclusions or when other navigation commands (like back or reload) would be more appropriate. With many sibling tools, clearer differentiation would be helpful.

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