macro_china_rmb

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

Annotations already declare read-only, idempotent, and non-destructive behavior. The description adds the data range (20170103-present) and return type (pandas.DataFrame), which is useful but does not disclose additional behavioral details such as update frequency or data volume.

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 brief and includes a URL, return type, and data range. The ':return:' and ':rtype:' lines are slightly redundant with the title, but the overall structure is clean and free of excessive detail.

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 no-parameter read-only tool, the description provides essential information: purpose, data range, source URL, and return type. However, it lacks details such as update frequency, data granularity, or whether the data is historical daily rates. The annotations cover safety, so the core context is present but not fully developed.

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, so there are no parameter descriptions needed. The description's mention of the data range is helpful context but not required for parameter semantics. The schema coverage is 100% with no parameters, making the baseline appropriate.

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 tool as providing the China RMB exchange rate central parity report with a specific data range (20170103-present), which distinguishes it from sibling macro tools. However, it lacks an explicit verb like 'retrieve' or 'fetch', relying on the ':return:' docstring to convey the action.

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 given on when to use this tool versus other RMB or macro tools. It does not mention alternatives, prerequisites, or typical use cases. The data range and URL provide some context but no direct usage direction.

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