find_undercompeted_brands

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

The description is consistent with the readOnlyHint annotation, stating it is a discovery tool. It adds important behavioral context such as being the flagship tool, detailing the default seller window, seed_brand constraint, and include_catchall filter, which goes beyond the annotation's scope.

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, using a single paragraph that front-loads the core purpose, then provides example queries and seed_brand usage. Every sentence adds value with no 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?

Given 18 parameters and no output schema, the description covers the main use case and seed_brand but does not describe the return format or results. It omits guidance on many parameters, which may leave the agent uncertain about the output. Slightly incomplete for a complex 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?

The input schema descriptions for parameters like min_sellers and max_sellers are already detailed and provide semantic meaning. The tool description adds value by explaining the purpose and context, though it does not elaborate on most parameters individually. With 56% schema coverage, the description supplements rather than repeats.

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 the tool finds brands with low seller competition but real sales presence, and is identified as the flagship sourcing discovery tool. It distinguishes from siblings by providing specific user query examples and positioning as the primary sourcing tool.

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 description explicitly lists when to use the tool with example queries and gives guidance on using seed_brand. It does not explicitly state when not to use or mention alternatives, but the provided examples sufficiently guide appropriate usage.

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