option_commodity_hist_sina

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds the data source URL and specifies the return is a pandas DataFrame, plus the symbol is a call option contract field. However, it does not describe pagination, date ranges, or column structure.

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 with title, URL, param, and return docs. It repeats the title in the return line, which is slightly redundant, but overall efficient and well-structured.

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 single-parameter read-only tool, basic invocation guidance is covered. However, with no output schema, the return is only described as '合约历史行情-日频' without column details or any caveats, leaving some ambiguity for the agent about the result structure.

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 has 0% description coverage, so the description carries the burden. It explains the symbol should be the call option contract field returned by option_sina_option_commodity_contract_list and gives an example default 'au2012C392', providing meaningful guidance beyond the schema.

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 '合约历史行情-日频' (contract historical quotes - daily frequency) and provides a Sina URL, but lacks a verb like 'get' or 'retrieve'. The tool name clarifies it is for commodity options, but the description does not distinguish from sibling tools such as option_hist_czce or option_sse_daily_sina.

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 param doc hints that the symbol should come from option_sina_option_commodity_contract_list, which is an implied dependency, but there is no explicit when-to-use or alternative guidance. No sibling comparisons or exclusion criteria are provided.

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