amac_fund_sub_info

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds the return type (pandas.DataFrame) and a source URL, but no extra behavioral context such as pagination, rate limits, or data update frequency. No contradiction exists.

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 somewhat cluttered, mixing a title, a URL, and a docstring-style return type in a single block. It is not front-loaded with a clear 'what' statement and includes redundant elements (e.g., the URL), but it remains relatively short.

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 zero-parameter read-only tool, the description conveys the data source and return type reasonably well. However, it does not clarify the exact data scope (e.g., all sub-funds, any filtering) or explicitly contrast with sibling fund tools, leaving some ambiguity for an agent deciding if this tool fits a query.

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 tool has zero parameters, and the input schema is empty. According to the rubric, the baseline for 0 parameters is 4, and the description does not need to explain parameter semantics.

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 '证券公司私募投资基金' (securities company private equity funds) from the AMAC information disclosure platform. Although it lacks an explicit action verb, the source URL and ':return' imply data retrieval, and the specific fund type distinguishes it from sibling amac_* tools.

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 provided on when to use this tool versus alternatives. There are many similar amac_* tools (e.g., amac_fund_info, amac_member_sub_info), but the description does not explain how this tool differs or when it is the appropriate choice.

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