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

No annotations are provided, so the description carries the full burden. It reveals the output structure (comparison matrix with common and category-specific fields) and implies a read operation, but it does not disclose any limitations, response size, or whether data is live or cached. It is adequate but not rich.

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, focused sentence that front-loads the action and output. Every word contributes value, with no filler or repetition.

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?

This is a simple tool with one enum-constrained parameter and no output schema. The description explains the purpose and output shape sufficiently for the tool's low complexity, though it could mention return format or category-specific behavior for completeness.

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%: the only parameter 'category' has a clear enum list and a description 'Category id to compare.' The tool description does not add additional meaning beyond what the schema already provides, so the baseline 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 'Return' and defines the resource as 'a comparison matrix for one category,' clearly distinguishing it from sibling tools like search or get_company. It also specifies the output content (common fields and buyer-relevant category fields), leaving no doubt about the tool's function.

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 implies usage for a single category and mentions it returns a comparison matrix, but it does not explicitly state when to choose this over alternatives or provide exclusionary guidance. Context is clear enough, yet no direct 'when-to-use vs. not' is offered.

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