navigate

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

Annotations already provide idempotentHint, readOnlyHint, and destructiveHint. The description adds the behavior of returning interactive element previews, which is useful beyond annotations. However, it does not mention waiting for page load or error handling.

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 concise sentences: first states the core action, second describes the return value. No redundant or irrelevant 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 no output schema, the description adequately explains the return value. It covers the primary behavior and return format. However, it lacks details on error scenarios or prerequisites (e.g., tab existence).

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 both 'url' and 'tab_id' are fully documented in the schema. The description repeats 'URL' but adds no new semantic detail beyond the schema.

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 a Chrome tab to a URL') and the return value (preview of interactive elements). It distinguishes 'navigate' from sibling interaction tools like 'click' and 'type_text' by focusing on URL navigation.

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 implies use after navigation for element interaction, but does not explicitly state when to use 'navigate' vs alternatives like 'create_tab' or 'get_tabs'. No exclusion criteria or alternative tools mentioned.

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