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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds that the response is a complete spec sheet and can be restricted to one section, but it does not disclose permissions, rate limits, error behavior, or return format beyond the listed categories.

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?

Two tightly written sentences: the first front-loads what the tool returns, and the second explains the optional section filter with its allowed values. Every sentence earns its place with no filler.

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 simple read-only lookup with rich safety annotations but no output schema, the description gives enough context to call it correctly by listing returned categories and the section filter. The only notable omission is any explanation of the required car_id parameter.

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 0%, so the description must compensate. It thoroughly enumerates the allowed section values and marks section as optional, which adds meaning beyond the bare anyOf string schema, but it says nothing about the required car_id parameter beyond its name.

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 clear resource ('ficha técnica completa') and enumerates the exact data categories returned, so an agent knows it retrieves vehicle technical specifications. It does not explicitly differentiate itself from sibling tools like get_vehicle_by_id, so it stops short of a 5.

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 explains the optional section filter but gives no guidance on when to choose this tool over alternatives such as get_vehicle_by_id or get_listing_details. There are no conditions, exclusions, or alternative-routing hints.

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