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

No annotations are provided, so the description must carry the behavioral disclosure burden. It only states that the tool returns event labels; it does not mention whether it is read-only, data freshness, pagination, authentication needs, or response structure. This is a minimal disclosure.

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 extremely concise, front-loading the core purpose and adding a useful category list. It wastes no words, though it is a noun phrase rather than a complete sentence, which slightly reduces clarity.

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?

Given the low complexity (1 parameter) and presence of an output schema, the description could be minimal, but it omits critical information such as the time range, event categories' exact meanings, or how to interpret the returned tags. It is not sufficiently complete for an agent to call the tool confidently without external knowledge.

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% and there is one required parameter, 'code'. The description does not explain the code format, exchange requirements, or stock universe, leaving the parameter ambiguous despite the '个股' hint. The description adds no meaningful parameter-level guidance beyond the schema's bare type.

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 identifies the resource as individual stock event tags and enumerates 42 categories with examples (block trades, dragon-tiger list, buybacks, dividends, share unlocks). This conveys the tool's scope and distinguishes it somewhat from specific event siblings like ashare_lhb and ashare_dividend, though it lacks an explicit verb and direct sibling differentiation.

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 the specific event tools (e.g., ashare_lhb for dragon-tiger list, ashare_dividend for dividends). The description provides no context for selection, prerequisites, or alternatives.

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