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

No annotations are provided, so the description fully handles behavioral disclosure. It discloses that times are in CET/CEST local time and instructs including phone numbers in output. This adds valuable context beyond basic functionality, such as timezone handling and output requirements.

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 concise and well-structured: a one-line purpose, followed by clear agentic examples under 'Agentic examples:', and a critical note section. Every sentence adds value, with no redundancy. The format is easy to scan and front-loaded with key information.

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?

Despite no output schema, the description sufficiently explains return behavior (times in CET/CEST, include phone numbers). The tool has moderate complexity with 6 parameters and 2 required, and the description covers essential behavioral aspects. Minor gaps: no mention of error handling or empty results, but overall adequate.

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%, so baseline is 3. The description does not add semantic detail beyond the schema; the agentic examples demonstrate parameter usage but don't clarify meaning beyond what the schema already provides (e.g., from_city, to_city, when, limit).

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 clearly states the tool searches for car rides on Prevoz.org in Slovenia, with a specific verb and resource. The verb 'Search' and resource 'car rides on Prevoz.org in Slovenia' distinguishes it from sibling tools like geo-route or slovenia-weather.

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 multiple agentic examples covering typical use cases (date, limit, dry-run). It implies when to use (searching rides in Slovenia) but does not explicitly state when not to use or alternatives. The context is clear and sufficient for an AI agent to infer appropriate usage.

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