get_weixin_article_content

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

With no annotations provided, the description carries the full burden. It does disclose a key behavioral trait: on failure it returns a message starting with '获取文章内容失败:' instead of raising an error, and it returns plain text. However, it omits other potentially relevant behaviors such as authentication requirements or rate limits, so it is only partially transparent.

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, compact sentence that front-loads the primary purpose and then adds the essential failure-behavior note. There is no wasted wording or redundant restating of the tool name.

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 straightforward fetch-content tool, the description covers the core action, the output type (plain text), and the failure mode. The lack of an output schema is mitigated by mentioning '纯文本'. Minor gaps like referer usage are already covered by the schema's parameter descriptions.

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 100%, so the baseline is 3. The description does not add any parameter-level semantics beyond the schema, but it doesn't need to because the schema already documents both parameters clearly.

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 ('抓取' / fetch) and a specific resource ('微信公众号文章正文纯文本' / WeChat article body plain text). This clearly distinguishes it from the sibling search tools (weixin_search, weixin_search_all), which find articles rather than retrieve their content.

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 the sibling search tools. The description only explains what the tool does and its failure behavior, leaving the agent to infer usage context from the name and schema.

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