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

Beyond readOnlyHint and openWorldHint annotations, the description adds useful behavioral detail: each response entry corresponds to a physical unit with its own price, condition note, and product page. It also warns that availability is immediate-only because quantities are small and often one-of-a-kind — crucial guidance the annotations do not provide.

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 front-loaded with the core action, then adds a clear definition, per-unit output behavior, and a practical availability warning in three sentences. Every sentence earns its place, including the Romanian term which helps resolve locale ambiguity.

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?

With 9 optional parameters, no output schema, and read/open-world annotations, the description fills important gaps: it specifies the shape of returned data, emphasizes immediate-only availability, and scopes the tool away from normal catalog listings. An agent has enough context to call the tool correctly.

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 89%, and parameter descriptions already explain sort, brand, limit, query, offset, category, language, max_price, and category_id. The description itself does not elaborate on any parameter semantics, so it stays at the baseline rather than adding extra value.

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 names a specific verb and resource: listing open-box/ex-display units, with clarifying terms like 'resigilat' and 'returned or opened stock sold cheaper.' It also distinguishes this tool from normal catalog listings by stating these units are NOT part of the normal catalog listings.

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 gives clear context for when the tool is relevant: open-box/ex-display inventory with per-unit pricing and small quantities. It says these units are not normal catalog listings, implying search_products or similar tools are for catalog items, but it does not explicitly name an alternative tool.

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