futures_settle_shfe

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

Annotations already indicate readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description adds behavioral context by stating the default date is the current trading day and that the return type is a pandas.DataFrame, which goes beyond annotations. No contradictions with the annotations were found.

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 well-structured as a docstring with title, URL, and param/return sections. The URL adds reference value but is not essential for invocation. No redundant information, and the content is front-loaded. The Chinese language is appropriate for the domain, and every sentence contributes to understanding the tool's use.

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 only one optional parameter, the description covers the parameter semantics and return type (pandas.DataFrame) sufficiently. There is no output schema, but the description indicates the return shape. It could mention the specific columns or fields in the settlement data, but for a simple date-query tool, the information is fairly complete. The lack of explicit sibling differentiation slightly reduces 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 schema provides only a 'date' string parameter with a default and no description (0% schema coverage). The description compensates fully by specifying accepted formats (YYYY-MM-DD, YYYYMMDD, or datetime.date), the default (current trading day), and the parameter type. This is thorough and essential for correct invocation.

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 identifies the tool's scope clearly: Shanghai Futures Exchange settlement parameters, with a return of 结算参数数据 (settlement parameter data). While it lacks an explicit verb like 'get' or 'retrieve', the docstring's :return: line implies data retrieval. The exchange name distinguishes it from sibling tools for other exchanges (e.g., futures_settle_ine, futures_settle_cffex).

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 exchange-specific siblings. The description only documents the date parameter's default behavior and formats, but does not mention exclusions or alternatives. For a tool in a family of similar exchange-settlement functions, explicit usage distinctions would be valuable.

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