shop_toys

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

Discloses that the tool opens a browser, a notable side effect. Also specifies default country behavior and allowed country values. No annotations provided, but description adds meaningful behavioral context.

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?

Highly concise: two sentences plus a code block for country. No redundant content; examples directly support usage.

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 2-parameter tool with output schema, the description covers purpose and input details adequately. Missing return format but not critical for functionality.

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?

Adds value beyond schema by listing exact country values and defaults (IN, US, UK, DE). Query parameter is exemplified, though not formally described. Schema coverage 0% so description compensates.

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?

Describes a specific action: searching Amazon for age-appropriate toys using a query. Clearly states the resource (Amazon) and the verb (search). No sibling tools require differentiation.

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?

Provides example queries illustrating when to use (e.g., 'toys for 1 year old'), but no explicit guidance on when not to use or alternatives.

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