tmall_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. It usefully discloses the authentication requirement, which is relevant to calling the tool correctly. However, it does not describe side effects, loading/waiting behavior, failure modes, or what happens after navigation, leaving behavioral context thin.

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, front-loaded sentence with no filler, and the prerequisite is succinctly appended in parentheses. This is appropriately concise for a simple one-parameter tool.

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 navigation tool, the definition covers the core invocation details: the target URL and the login prerequisite. It does not mention return values or post-navigation state, but given the tool's low complexity this is a minor gap rather than a blocking omission.

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?

The schema already documents the single URL parameter with 100% coverage, so the description needs to add little. The phrase '指定页面' loosely echoes the parameter meaning but adds no additional format, constraint, or usage detail beyond what the schema provides.

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 uses a specific verb ('导航到' / navigate to) with a clear resource (指定页面 / specified page), and the URL parameter resolves any remaining ambiguity. It is distinguishable from siblings like tmall_click and tmall_get_content by the act of navigating to a URL, though it doesn't explicitly name a sibling.

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 states an important prerequisite ('需要先登录' / login required first), which gives the agent a necessary precondition. However, it does not explain when to prefer navigation over sibling tools, nor does it mention any exclusions or alternative behaviors.

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