Get Price Star Boundaries

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

Annotations already declare readOnlyHint and openWorldHint, so the description need not repeat that. It adds that the tool shows price ranges, which is basic behavioral context. However, no additional traits (e.g., data freshness, dependencies) are mentioned, so the description adds limited value beyond annotations.

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?

Two succinct sentences with no unnecessary words. All content is relevant and front-loaded: the first sentence states the action and input, the second explains the output. Every sentence serves a purpose.

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 simplicity (one required parameter, no output schema, and annotations indicating safe read), the description sufficiently explains what it does and returns. It could mention if the range is inclusive or the format, but it's not essential for correct invocation.

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 100%, and the description only mentions 'by EAN', which restates the schema's parameter description. It does not add format details, constraints, or examples beyond what the schema provides, 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 specific verbs and resources: 'Get price star boundaries for a product by EAN' and explains the output ('price ranges that correspond to different star ratings'). It clearly distinguishes from sibling tools like get_product_ratings or get_commission by focusing on price ranges for star ratings.

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 does not explicitly state when to use this tool versus alternatives (e.g., get_product_ratings) or provide any context about when not to use it. While the purpose is clear, there is no guidance for an agent to differentiate usage scenarios.

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