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

With no annotations and no output schema, the description carries the behavioral burden, and it does disclose the concrete content set (delayed quotes, several reporting periods, 13F top-15, Form 4, 8-K). It omits auth requirements, rate limits, freshness/latency details beyond the word '延遲', and any failure behavior.

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?

Single dense sentence, resource and return categories front-loaded, no padding. The leading bracketed tag '［台美股題材與高股息］' is partly thematic noise but does not obscure the payload list.

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 one-parameter lookup with no output schema or annotations, the description correctly enumerates what comes back, which is the main thing an agent needs. It still lacks guidance on alternatives, data availability caveats, and error handling.

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?

Only one parameter (symbol) with 100% schema description coverage including examples, so the schema already does the work. The description adds no parameter-level meaning beyond the schema baseline.

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?

Naming '美股個股完整資料' plus an explicit enumerated payload (delayed quotes, SEC financials, dividends, 13F, Form 4, 8-K) makes the resource and scope unambiguous. It does not, however, distinguish itself from the sibling stocks__get_us_quotes, which the '延遲報價' element appears to overlap with.

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 indication of when to pick this over stocks__get_us_quotes or stocks__get_stock, and no prerequisites or exclusions. The agent gets a data inventory but no routing guidance.

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