futures_settle_czce

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

Annotations already indicate readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safe read nature is covered. The description adds the source URL and date flexibility, but doesn't disclose return format or any potential quirks. This adds some value beyond annotations without contradiction.

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 compact and includes the essential information: function purpose, source URL, parameter format, and return type. The multiple date format options could be seen as slightly verbose, but they are valuable for users to know.

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 read-only retrieval tool with one optional parameter, the description covers the main needs: source, parameter format, and default. However, it doesn't describe the data structure beyond saying pandas.DataFrame, which is minor for a data retrieval tool.

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?

Schema coverage is 0% for the date parameter, but the description thoroughly documents the date parameter's accepted formats (YYYY-MM-DD, YYYYMMDD, datetime.date) and default behavior. This compensates well for the schema gap.

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 states it retrieves settlement parameters from the Zhengzhou Commodity Exchange (CZCE) with a specific URL, which is a specific verb+resource. It doesn't explicitly distinguish from sibling tools like futures_settle_ine or futures_settle_shfe, but the exchange name in the title and description makes it clear.

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?

The description implies usage for retrieving CZCE settlement parameters by date, with a default to current trading day. No explicit when/when-not or alternatives are stated, but the domain-specific naming and date parameter provide implied context.

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