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

Annotations already cover read-only, open-world, idempotency, and destructive hints. The description adds meaningful behavioral context beyond those: paid per call, no account required, an output cap of 10 items, and a warning that text matches do not imply equivalent specs or valid bid prices.

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 reasonably short and front-loads the core purpose, but the middle sentence ('Collecting procurement items and calculating the returned price summary') is somewhat redundant and the wording is awkward.

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 9-parameter tool with no output schema and limited annotation detail, the description does not explain the structure of the returned price summary or how the main parameters shape results. It provides output-limit and caveat context, but leaves too much to the schema and inference.

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 description coverage is 100%, so the schema already documents all 9 parameters in detail. The description adds little parameter-level meaning, and its 'up to 10 items' phrasing is potentially confusing against the `limite` parameter allowing 1 to 100, though the schema remains authoritative.

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 resource and outcome: a winning-price summary for procurement items, with full summary and up to 10 items. It is clear enough to distinguish from generic search, but it does not explicitly differentiate itself from sibling pricing/award tools such as awarded_prices or pricing.

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?

It mentions that the tool is paid per call and requires no account, but gives no explicit guidance on when to use it versus sibling tools. The caveat about text matching not establishing equivalent specifications is useful, but it is a warning rather than a selection rule.

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