打开网易云功能页

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

The description adds the useful behavioral fact that only preset orpheus:// routes are allowed, which the annotations do not cover. However, it does not disclose other behavioral traits such as whether the NetEase client must already be running or what UI side effects occur. The annotations are sparse and not contradictory.

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?

One concise sentence with the target areas listed first and the route restriction immediately after. No filler, every clause adds useful 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 simple one-enum navigation tool, the description plus schema cover target selection and the core restriction. The lack of an output schema is acceptable for a UI-navigation action. A note on whether the client must be launched first would be a minor improvement.

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 bears the semantic burden. It maps the enum values to understandable targets: private FM, downloads, and song recognition. This helps an agent select the correct 'area' value, though it does not document the exact orpheus:// URI mapping.

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 '打开' with a clear resource: the NetEase function page, listing the exact areas (private FM, downloads, song recognition). It distinguishes itself from content/control siblings through the 'orpheus:// route' constraint, but does not explicitly name any sibling tool for contrast.

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 given about when to use this tool versus netease_launch or netease_open_entity. The description states a route restriction, which is a constraint, not usage direction. An agent must infer from the area names and sibling names when this tool is the right choice.

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