navigate

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the action itself and does not mention whether navigation waits for page load, updates browser history, or handles errors such as invalid URLs or network failures. This is a bare statement of intent, not a behavioral contract.

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 a single sentence, front-loaded with the action verb, and contains no filler. Every word contributes to the meaning, making it highly concise and well-structured.

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?

For a simple one-parameter action, the description is adequate, but it omits the explicit prerequisite of an active browser session (though implied) and the post-condition of page-load behavior. Without an output schema or annotations, an agent cannot know whether the tool blocks until navigation completes, which is a minor but real gap.

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%, and the url parameter is fully documented with type, format, and an example. The description adds no parameter-specific detail, but none is needed because the schema already provides sufficient semantic meaning.

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 states a specific verb ('navigate'), resource ('active browser'), and target ('specified URL'), making the tool's function unmistakable. It clearly distinguishes from siblings like navigate_history (history traversal) and launch_browser (session creation) by focusing on direct 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 usage when the agent needs to load a specific URL in the current browser, but it provides no explicit guidance about prerequisites (e.g., requiring launch_browser first) or alternatives (e.g., navigate_history for back/forward). No exclusions or conditions are stated.

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