option_comm_info

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

Annotations already declare readOnlyHint=true and idempotentHint=true, covering safety. The description adds the data source URL and return type (DataFrame of fees), but doesn't disclose potential edge cases such as the parameter default/choice mismatch, which is more of a parameter semantics issue.

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 concise and front-loaded with the title and URL. The docstring format is standard and compact, though the :param: and :return: lines are slightly redundant with the title. Each sentence serves a purpose.

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 and 0% schema description coverage, the description's minimal ':return: 期权手续费' is insufficient to understand the exact data structure. The parameter mismatch further undermines completeness, leaving an agent uncertain about how to invoke the tool correctly.

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 lists allowed symbol values (exchanges and '所有'), but the schema default is '工业硅期权', which is not in that list. This contradiction creates confusion about valid inputs. The schema has 0% description coverage, so the description must compensate but instead introduces inconsistency.

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 states it fetches commodity option trading fees (九期网-商品期权手续费) from a specific URL, which is a precise verb+resource. It doesn't explicitly contrast with sibling fee tools, but the resource is specific enough to distinguish it.

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 given on when to use this tool versus alternatives like futures_fees_info or option_comm_symbol. The description only includes a parameter docstring without any context on selection criteria or prerequisites.

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