Browser Navigate

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

No annotations are provided, so the description carries the full burden. It discloses that the tool returns the new page state and includes a snapshot when content changes, configurable via NAVIGATOR_AUTO_SNAPSHOT. However, it omits other behavioral aspects such as the meaning of the 'wait' parameter, error handling on invalid URLs, or potential side effects (e.g., triggering dialogs). It adds some value but is not comprehensive.

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 short and front-loaded with the primary action. It is efficient with two sentences and no filler. However, it could have been structured to include parameter details without becoming verbose, so it loses a point for missing that opportunity.

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 tool with 4 parameters, no annotations, and no schema descriptions, the description is inadequate. It does not explain the 'wait' and 'session' semantics, how to handle failures, or how this tool fits into the broader navigation workflow (e.g., when to use it vs. back/forward). An output schema exists but is not shown; even so, the description should still cover key usage context. The tool is not fully self-explanatory for an agent.

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%, so the description must compensate. It only vaguely addresses the 'tab' parameter via 'active (or specified) tab' and implicitly covers 'url'. The 'wait' and 'session' parameters are completely unexplained, and there is no guidance on valid values or behavior. This leaves the agent guessing about half the parameters.

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 ('the active or specified tab'), and the target ('to a URL'). This distinguishes it from siblings like browser_navigate_back/forward (history navigation) and browser_reload (refresh), so an agent can immediately tell what this tool does.

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 you want to go to a URL) but provides no explicit guidance on when to choose this tool over alternatives like browser_navigate_back, browser_navigate_forward, or browser_reload. It does not mention when not to use it or any prerequisites, leaving the choice to inference.

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