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

With no annotations, the description carries the burden well: it discloses per-call pricing (0.011 USDC), that the record id is checked exactly but company association is not attested, that additional pages need separate requests, and that no completeness/safety guarantee exists. It leaves return shape undescribed, but the behavioral caveats are unusually rich.

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, but the English disclaimer block is bloated and repetitive: "completeness" is negated in the opening list and again in the closing "No completeness or safety guarantee," and the get_cn_data_tool_schema instruction is buried mid-paragraph. Several sentences do not earn their place.

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 tool with no output schema, no annotations, and fully opaque parameters, the description adequately covers the caveats, pricing, and id provenance. However it leaves the actual argument contract entirely to an external schema tool, so an agent cannot call it correctly from this definition alone.

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 coverage is 0% and the schema is an opaque {arguments: additionalProperties:true} object, so the description should compensate. It does name record_id as the key input and routes the agent to get_cn_data_tool_schema("v3_minapp_detail") for the rest, which is a reasonable workaround but not a substitute for documenting the actual parameters.

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?

"查询单个小程序详情" states a specific verb (query detail) and resource (single mini-program), and the mention of cn_data_v3_minapp_list as the id source hints at its place among siblings like cn_data_v3_app_detail. It is clear, though it never explicitly contrasts itself with the many lookalike detail tools in the sibling list.

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?

It states the prerequisite explicitly: a record_id must come from cn_data_v3_minapp_list and acquiring that list is a separate call. That gives clear context for when/how to invoke it, but there is no exclusion guidance (e.g., when to prefer cn_data_v3_app_detail or other detail tools).

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