option_commodity_hist_sina

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered. The description adds only the source URL and rtype=pandas.DataFrame, without saying anything about coverage, pagination, rate limits, or what the daily records contain beyond the annotations.

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?

It is short, but the same phrase '合约历史行情-日频' is repeated as both title and :return:, and the docstring layout puts the URL before the parameter explanation, so it is not cleanly front-loaded.

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 a single optional parameter and no output schema, the description does cover the parameter origin and return type, which is roughly adequate. It nonetheless leaves the alternative-versus-sibling question and the nature of the returned daily fields unanswered.

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 description coverage is 0%, so the description must carry the parameter meaning, and it does identify symbol as the code returned by option_sina_option_commodity_contract_list() for a call option contract. The mixed Chinese/English phrasing and the example (symbol='黄金期权', contract='au2012') are somewhat garbled, so the added meaning is only partially usable.

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 conveys a specific verb+resource ('合约历史行情-日频' = daily-frequency contract historical quotes) and names the Sina data source. However, it gives no differentiation from numerically similar siblings such as option_commodity_contract_sina or option_commodity_contract_table_sina, leaving the agent to guess which option-history endpoint to pick.

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?

There is no explicit when-to-use or when-not-to-use guidance and no named alternative endpoint. The only routing hint is that the symbol must come from option_sina_option_commodity_contract_list(), which is a parameter-derivation note rather than usage guidance.

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