macro_china_pmi

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

Beyond the readOnlyHint and idempotentHint annotations, the description adds the URL source and the return type (pandas.DataFrame). This provides some context about the data origin and format, but it does not disclose other behavioral traits such as whether the data covers all historical periods or the latest value only.

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 very short and front-loaded with the title and source URL. However, it repeats the index name in the title and the :return: line, which is slightly redundant. Overall, it is efficient and easy to parse.

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 simple, parameterless data retrieval tool with strong annotations, the description is mostly adequate. It states the source and return type but does not explain the data structure (e.g., columns, frequency) or differentiate from similar PMI tools. Given the lack of an output schema, a bit more detail would improve completeness.

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 schema coverage is 100%, so the baseline is 4. The description does not mention parameters, but since there are none, no additional semantic explanation is required.

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 states it retrieves the China Purchasing Managers' Index from East Money, with a specific resource URL. However, it does not differentiate itself from sibling tools like macro_china_pmi_yearly or macro_china_cx_pmi_yearly, so it lacks explicit sibling distinction.

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 is no mention of exclusions, contexts, or typical use cases. The only implied guidance is that it returns PMI data, but this is not explicit.

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