browser_navigate

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

Annotations already declare destructiveHint=true and openWorldHint=true, so the description's job is reduced. However, the description adds no additional context about side effects (e.g., page load waits, redirects, script execution). It simply restates the action without elaborating on consequences or what happens after navigation.

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 short sentence, extremely concise and front-loaded. It wastes no words, though it is minimal. This is acceptable for a simple tool, though it could be slightly more informative without becoming verbose.

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?

With no output schema and only one parameter, the description should clarify what happens after navigation (e.g., waits for load, returns status). It does not mention any behavior post-navigation, nor does it clarify the openWorldHint (e.g., potential for leaving the current page context). The description is insufficient for an agent to fully understand the tool's effects, despite the annotations providing some safety signals.

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 the URL parameter is fully documented in the schema. The description adds no further meaning beyond what the schema provides. Baseline 3 is appropriate when schema handles parameter semantics.

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 the verb 'Navigate' and the resource 'URL', which is clear and specific. However, it does not differentiate from sibling tools like browser_navigate_back or browser_click, making the purpose somewhat generic. It is not a pure tautology, but it offers little beyond the tool name.

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 is provided on when to use this tool versus alternatives such as browser_navigate_back or browser_click. There is no mention of prerequisites, typical use cases, or conditions under which this tool is preferred. The agent must infer usage from the name alone.

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