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

With no annotations, the description carries the full burden, and it does disclose useful behavior: a header is not the underlying record list, null means unknown, additional pages require separate requests, and the per-call cost is 0.011 USDC. However, much of the text is boilerplate legal disclaimer repeated at both ends, diluting the genuinely informative parts.

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 purpose is front-loaded, which is good, but the body is bloated with redundant disclaimers ('no completeness or safety guarantee' recurs, and the opening liability sentence is restated at the end). Several sentences repeat the same non-guarantee rather than adding information.

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?

Given no output schema, no annotations, and a fully opaque argument schema, the description covers pricing, pagination, the header-vs-list distinction, and parameter sourcing, but omits what fields the header actually returns and whether company_id is mandatory, leaving real gaps 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 description coverage is 0% with a single opaque nested 'arguments' object. The description names company_id and redirects to get_cn_data_tool_schema for details, which is a small amount of added meaning, but it never states that company_id is required, its format, or what other arguments the object accepts.

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 opening sentence '查询专利法律状态和专利类型概览' states a specific verb and resource (patent legal status and type overview). It is clear what the tool returns, but it does not differentiate itself from siblings like cn_data_v3_patent_law_count or cn_data_v3_patent_type_count, which appear to cover overlapping sub-topics.

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 only actionable guidance is 'Use company_id from cn_data_v3_company_detail', which is really an input-construction hint. There is no statement of when to choose this header over the many sibling patent/count/list tools, nor any exclusion or alternative named.

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