browser_navigate

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

Annotations indicate destructiveHint=true and readOnlyHint=false, which the description doesn't contradict. The description adds minimal behavioral context beyond annotations—it implies navigation changes the browser state but doesn't detail effects like page loading, potential errors, or interaction with other tools. With annotations covering safety, it earns a baseline score for not adding significant value.

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 extremely concise with 'Navigate to a URL', using only three words to convey the core action. It's front-loaded and wastes no space, making it efficient for quick understanding without unnecessary elaboration.

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 tool's moderate complexity (navigation with destructive potential) and rich annotations (destructiveHint, openWorldHint), the description is minimally adequate. It lacks details on output or error handling, but annotations provide safety context. Without an output schema, more behavioral info would help, but it meets a basic threshold.

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 100%, with the single parameter 'url' fully documented in the schema. The description doesn't add any semantic details beyond what the schema provides, such as URL format examples or validation rules. Baseline score is appropriate as the schema handles parameter documentation.

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 'Navigate to a URL' clearly states the action (navigate) and target (URL), making the purpose immediately understandable. It distinguishes from siblings like browser_click or browser_type by focusing on URL navigation rather than interaction or input. However, it doesn't specify the browser context or differentiate from browser_navigate_back, keeping it from a perfect score.

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 no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites like needing an open browser, compare to browser_navigate_back for backward navigation, or indicate when other tools like browser_wait_for might be needed after navigation. This lack of context leaves usage unclear.

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