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

The annotations already declare readOnlyHint=true and openWorldHint=true, so the description does not need to cover safety or completeness. The description adds a little context by specifying the content of the result (items and prices), but it does not disclose any behavior beyond what the annotations and title imply.

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 a single compact sentence that conveys the resource type, nature of the data, and key output fields without filler. The most distinctive term ('Curated product bundles') appears first, making the purpose immediately clear.

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 simple read-only listing tool with one optional, well-documented parameter and no output schema, the description is largely complete: it identifies what is returned (kits, items, prices) and the annotations cover safety and open-world aspects. Minor gaps like pagination or ordering are not critical for this simple 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 single parameter 'locale' is already fully described in the schema (100% coverage), including its default and effect on product names, slugs, and prices. The description adds no additional parameter information, so the baseline of 3 applies.

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 and resource ('Curated product bundles (kits)') and clearly states what the tool returns ('their items and prices'). The term 'bundles' is distinct from sibling tools like list_products, list_brands, and list_offers, so an agent can identify the right tool from the description alone.

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 provides no guidance on when to use this tool versus alternatives like list_products or list_offers. There is no mention of scenarios, exclusions, or relationships to sibling tools, leaving the agent to infer usage solely from the name.

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