browser_navigate

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

No annotations are provided, so the description bears full burden. It only states 'Navigate to a URL', but does not disclose whether it waits for page load, timeout behavior, error handling for invalid URLs, or if it replaces current page content. Minimal behavioral context.

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?

Two short sentences with no wasted words. The first sentence front-loads the core purpose, and the second provides essential usage guidance. Highly efficient and easy to parse.

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 no output schema, so the description should cover return values. It does not mention what happens after navigation (e.g., returns page info?). Also lacks preconditions (browser must already have tabs open). Adequate for a simple tool but gaps remain.

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 already describes both parameters. The description adds value by clarifying that targetId is optional and defaults to the first available tab, which is not in the schema description. This enhances the agent's understanding of parameter behavior.

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 (navigate), the resource (URL in a tab), and distinguishes from sibling tools like browser_click or browser_fill_form. 'Navigate to a URL in a specific tab' is specific and 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?

The description indicates when to use targetId (from browser_tabs) and implies fallback behavior (first available tab). However, it does not explicitly contrast with sibling tools or state when to use navigation vs. other interactions like clicking links.

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