zen_navigate

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

Describes the core navigation action without annotations. Does not disclose whether it waits for page load or error handling, but is not misleading.

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?

Uses only two sentences plus a concise Args list, no redundant or rambling content. Efficiently conveys the essential 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?

Adequately covers the tool's purpose and parameters for a simple navigation action, though missing details about page load behavior. Acceptable given no output schema.

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?

Adds meaning beyond the schema by providing an example for url and explaining tab_id default behavior. Compensates for 0% schema description coverage.

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 it navigates the active tab to a URL, using a specific verb and resource. Distinguishes from siblings like zen_back, zen_forward, and zen_reload_tab.

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?

Implicitly indicates usage for navigation, but lacks explicit when-to-use or when-not-to-use guidance compared to alternatives like zen_new_tab or zen_click.

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