compare_prices

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

There are no annotations and no output schema, so the description carries the full burden of explaining behavior. It only says 'compares', without stating what the returned data looks like, whether it fetches live prices, or how it handles cases where the same product is not available on both sites.

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, front-loaded sentence with no wasted words. It is concise and readable, but it is so brief that it omits useful usage and output context.

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 that there is no output schema and no annotations, the description is not complete enough for an agent to confidently call the tool. It lacks return-value expectations, failure behavior, and explicit guidance about when to choose this tool over related siblings.

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%, so the schema already documents query and category. The description adds meaningful nuance by emphasizing 'same product', which tells the agent the query should be a specific product identifier rather than a broad search term.

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 ('compares') and a precise resource ('prices between Danawa and Computzone for the same product'). It distinguishes the tool from siblings like get_price_history and find_lowest_price by explicitly scoping it to a two-retailer comparison.

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?

No guidance is provided for when to use this tool versus alternatives such as find_lowest_price or get_price_history. The description says what the tool does but not which situations call for it or when a sibling would be more appropriate.

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