browser_navigate

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

With no annotations, the description must disclose behavioral traits. It only mentions the relative path constraint. It does not describe side effects (e.g., page reload), error behavior, or that navigation is blocking. Key behaviors like waiting for page load (governed by wait_until) are left to the schema.

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 two sentences, front-loaded with the main action, and each sentence provides necessary information. No unnecessary words.

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?

Given the complexity (6 parameters, no output schema, many sibling tools), the description is too brief. It does not mention return values, success/failure outcomes, or how the tool integrates with other browser tools. The schema covers parameters well, but the tool's overall behavior is under-documented.

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%, so baseline is 3. The description adds a helpful note about relative paths requiring base_url, but does not elaborate on other parameters (tab_id, timeout, wait_until, etc.). The added value is marginal.

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 to a URL in a specified tab (verb+resource+scope). It implicitly distinguishes from sibling tools like browser_navigate_back, but does not explicitly differentiate from other navigation-related tools.

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 provides a specific usage hint about relative URLs requiring base_url, but it does not explain when to use this tool vs alternatives like browser_click or browser_type. No exclusions or when-not-to-use are given.

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