List WeChat Tabs

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

The description adds behavioral context beyond annotations by mentioning 'attachable browser tabs' and the default filter behavior. Annotations already indicate read-only and idempotent operations, so the description enriches rather than repeats.

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 that conveys the core action and default behavior with no wasted words. It is efficiently structured and easy to parse.

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?

The tool is simple with optional parameters and an output schema present, which documents return values. The description covers the key behavior (listing tabs, default filter) without needing to elaborate further. Annotations provide safety context, making this complete.

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 provides 100% parameter coverage with descriptions for both cdp_url and wechat_only. The description adds narrative context by explaining the default filter behavior, but the schema already carries the semantic weight, so a baseline score of 3 is appropriate.

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 tool 'List attachable browser tabs' with a specific verb and resource, and mentions the default WeChat filter. This distinguishes it from sibling tools like wechat_read_article and wechat_open_article, which perform different operations.

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 context by stating it lists attachable tabs filtered to WeChat by default, making it clear when to use it for discovering available tabs. It does not explicitly name alternatives or exclusions, but the sibling tools are distinct enough that usage is clear.

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