stockx_brands

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

With no annotations, the description carries the full burden of behavioral disclosure. It adds valuable context about credential-free public data and the source API being the same one backing StockX's site menu, which communicates read-only access and data provenance. It doesn't mention pagination or rate limits, but for a zero-parameter catalog fetch this is adequate.

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 two sentences with a clear front-loaded opening and no filler. Every sentence contributes useful information: what is returned, what fields are included, how it should be used, and its public/credential-free nature.

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 the tool's low complexity, empty input schema, and absence of an output schema, the description sufficiently explains the return contents (name and URL slug for every brand) and the practical integration with search parameters. Nothing essential is missing for an agent to select and invoke this 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 tool has zero parameters, so the baseline is 4. The description appropriately focuses on output and usage rather than parameter semantics, which are unnecessary here.

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 specifies the verb ('Get'), the resource ('StockX brand catalog'), and the exact scope ('full brand catalog name and URL slug for every brand'). It differentiates from siblings by explicitly targeting the brand domain and connecting it to the search tool's brand/model parameters.

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 gives an explicit use context: building the brand parameter for GET /stockx/search or providing the single-brand context for the model parameter. It does not name alternatives or state when not to use it, so it falls short of a 5.

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