browser_navigate

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

With no annotations provided, the description carries the full behavioral burden, yet it only says what is returned. It omits that navigation replaces the active tab's current page, whether it waits for load, how errors or timeouts behave, and any auth or cross-origin constraints.

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 short sentences, front-loaded with the action and followed by return behavior. There is no filler and every clause contributes 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?

For a browser navigation tool with no annotations and no output schema, the description is incomplete. It does not explain state-changing effects on the active tab, load/wait behavior, or what the returned snapshot contains, leaving the agent under-informed about a potentially disruptive operation.

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 only 50%: the snapshot parameter is already documented in the schema, and the description merely restates it as optional. The url parameter has no schema description, and the description does not add format or requirement details such as absolute URL expectations.

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 and resource: opening a URL in the active tab, plus what it returns. It does not explicitly distinguish itself from siblings such as browser_tabs or browser_snapshot, but the core action is clear.

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?

There is no guidance on when to use this tool versus browser_tabs, browser_snapshot, or other navigation-related siblings. The mention of the optional snapshot is a parameter behavior, not usage guidance, and no exclusions or preconditions are given.

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