browser_navigate

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states 'Navigate the current tab to a URL' and 'Returns: JSON response from the API.' It does not disclose potential side effects, error behavior, whether it waits for page load, or any permissions required. The description is minimal and lacks the transparency expected for a navigation 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 concise and structured with clear 'Args' and 'Returns' sections. The purpose is front-loaded in the first sentence. It avoids unnecessary verbosity, though the 'Returns' section is generic and could be omitted if an output schema is available. Overall, it is efficient and well-organized.

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 has a simple interface with two well-explained parameters, and an output schema is indicated as present (though not shown). The description says 'Returns: JSON response from the API,' which is vague but acceptable if the output schema provides specifics. However, it lacks details on behavior like waiting for page load or error handling, which could be important for an agent to call it correctly in a workflow. Given the low complexity, a score of 3 is appropriate; it is adequate but has gaps.

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 0%, so the description must compensate. It explains both parameters: serialno is 'The browser device serialno, from list_devices' and url is 'The destination URL.' This adds meaningful context beyond the raw schema types, clarifying the source of serialno and the nature of the URL. It provides sufficient semantics for an agent to correctly populate both arguments.

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 verb and resource: 'Navigate the current tab to a URL.' It clearly distinguishes this from sibling tools like browser_refresh, browser_go_back, and browser_go_forward by focusing on URL navigation. The addition of 'current tab' clarifies scope, and the args section reinforces the purpose.

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 description does not provide guidance on when to use this tool versus alternatives. It mentions that serialno comes from list_devices, which is a prerequisite, but there is no explicit statement about when to use this tool instead of browser_refresh, browser_go_back, or other navigation tools. No exclusions or conditions are given.

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