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

With no annotations, the description carries the full burden, but it does disclose the returned field set (cash/stock dividend, resolution progress, meeting dates) and the data source (TWSE OpenAPI), which is useful context. It does not state read-only nature explicitly or any auth/rate-limit behavior, so it stops short of full behavioral coverage.

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?

A single compact sentence that front-loads the resource and then lists returned fields. The leading bracket tag is mild noise but the whole is efficient and wastes little.

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?

With no output schema and no annotations, the description sensibly enumerates the key returned fields, which largely compensates for the missing output schema. It stops short of distinguishing from sibling dividend tools and gives no usage guidance, leaving the definition only minimally 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?

Schema description coverage is 100%, so the single 'code' parameter is already fully documented in the schema, including the default behavior when omitted. The description adds no parameter-level syntax or format detail beyond that, so the baseline 3 applies.

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?

States a specific verb+resource (Taiwan listed company dividend distribution) and enumerates the exact data returned: cash dividend, stock dividend, resolution progress, board/shareholders meeting dates. An agent can tell what it fetches. However, it never distinguishes itself from close siblings like get_tw_ex_dividend or get_etf_dividends, so routing remains ambiguous.

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 when-to-use guidance, no prerequisites, and no mention of alternatives. The bracket tag '台美股題材與高股息' is a thematic label, not an instruction. The agent must infer that this is for individual Taiwan-listed companies vs ETF/ ex-dividend siblings.

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