page_navigate

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

Discloses default timeout and return values. With no annotations, the description adequately conveys that navigation is a mutation (changing page state). However, it lacks details on whether the tool waits for full page load, how errors are handled, or what happens on timeout.

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?

Extremely concise: one sentence covering action, return values, and a key default. No redundant information.

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 a simple tool, the description covers core functionality. However, missing parameter semantics for tab_id and lack of usage context (e.g., does it work without an existing tab?) reduce completeness. Output schema exists but return values are already mentioned.

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%, yet the description only partially covers parameters. It explains 'url' implicitly and mentions timeout default, but omits 'tab_id' entirely. The 'tab_id' parameter is critical for multi-tab scenarios and its purpose is unclear from the 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?

Clearly states verb 'Navigate to a URL' and resource 'URL', with specific return values (final URL, page title). Distinguishes from sibling tools like page_forward, page_refresh, and page_scroll, which operate on already-loaded pages.

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 guidance on when to use this tool versus alternatives. Does not mention prerequisites (e.g., need an active tab), nor situations where other navigation tools like tab_new or page_forward might be more appropriate.

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