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

Annotations already establish that this is a read-only, idempotent, non-destructive, closed-world operation. The description adds meaningful behavior beyond that: missing evidence is treated as non-matching, and installation-specific compatibility is explicitly outside the match result and must still be checked.

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 short and front-loaded: the comparison purpose comes first, followed by two concise caveats. Every sentence carries domain meaning and there is no redundant wording.

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 seven-parameter nested search tool with no output schema and no schema descriptions, the definition is too thin. It supplies useful match caveats, but it omits parameter semantics, return behavior, and sibling-tool selection guidance.

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?

With seven parameters, nested objects, and 0% schema description coverage, the description should carry parameter meaning but does not. It vaguely references source technical requirements, but it does not explain the source id/sku forms, technical filters, sort, pagination, storefront, or language parameters.

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 states a specific comparison action against source technical requirements, so the core purpose is clear enough to act on. However, it does not clarify whether the tool searches/returns candidate products or performs a direct comparison, and it gives no distinction from sibling search_products.

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 explicit guidance on when to use this tool versus alternatives such as search_products or get_products. The caveats about missing evidence and installation compatibility are domain rules, not usage-selection guidance.

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