Retrieve subcategory navigation tabs for a SHEIN category ID, each with a representative product.
SHEIN category nav tabs. Returns the subcategory navigation tabs for a SHEIN category, each with a representative product.
| Name | Required | Description | Default |
|---|---|---|---|
| cat_id | Yes | Numeric SHEIN category id |
Changes observed during successful MCP inspections.
v1.16.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does disclose a behavioral trait: each returned tab includes a 'representative product.' However, it doesn't mention side effects, output structure, or behavior on invalid cat_id, so key behavioral details remain unknown.
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 at two short sentences, but the first sentence 'SHEIN category nav tabs.' largely restates the tool name and adds minimal value. The second sentence provides the substantive content, making the structure mostly efficient with one minor redundancy.
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?
Since there is no output schema and no annotations, the description needs to explain return semantics. It notes subcategory tabs and representative products, but it doesn't clarify the response shape or how this tool relates to other SHEIN category tools, leaving noticeable gaps for an agent.
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 100%; cat_id is already documented as a 'Numeric SHEIN category id.' The description adds only the generic phrase 'for a SHEIN category,' which does not provide extra meaning beyond the schema, so baseline 3 is appropriate.
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 uses a specific verb ('Returns') and a concrete resource: 'subcategory navigation tabs for a SHEIN category, each with a representative product.' This is clear and distinguishable from siblings like shein_category_goods or shein_category_filters, though it doesn't explicitly name an alternative.
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 provided about when to use this tool instead of the many SHEIN sibling tools. The description implies it is for navigation, but it doesn't state conditions, exclusions, or alternatives, leaving the agent to guess the right context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.