option_hist_czce

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, covering the safety profile. The description adds the source URL and return type but does not disclose behavioral traits such as data coverage, potential missing dates, or any quirks of the web source. This is acceptable given the strong annotation coverage.

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 reasonably structured as a docstring with clear parameter descriptions and return type. However, it includes the redundant URL line and the title is repeated, which adds unnecessary clutter. The long symbol list is necessary but makes the description somewhat unwieldy.

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 no output schema, the description should ideally detail the returned data columns or structure, but it only says '日频行情数据' (daily market data) and pandas.DataFrame. This is sufficient for a basic understanding but leaves ambiguity about what fields are present. For a simple data retrieval tool with two parameters, this is adequate but not comprehensive.

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 description adds significant meaning beyond the schema by listing the full set of valid symbol choices and defining trade_date as 交易日. Although the exact date format is not explicitly stated, the default value '20191017' implicitly indicates YYYYMMDD, and the description compensates for the 0% schema coverage.

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 retrieving daily-frequency market data for options on the Zhengzhou Commodity Exchange, with a specific URL and return type. However, it lacks an explicit verb like 'get' or 'fetch' and does not distinguish itself from similar sibling tools such as option_hist_yearly_czce or option_hist_dce.

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. The description only lists parameters and return type, but does not mention contexts, prerequisites, or differences from other option data tools like option_hist_shfe or option_hist_dce.

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