find_flights

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

The description discloses that uppercase country codes silently return no fares and that dates define a departure window returning cheapest fare per route per day. However, it omits other behavioral traits such as rate limits, authentication requirements, or the effect of optional parameters like max_price. With no annotations, the description provides adequate but not comprehensive transparency.

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, with a clear front-loaded purpose followed by parameter details in a few sentences. No redundant information is present, and every sentence adds value.

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?

Given the tool has 6 parameters (3 required), sibling tools, and an output schema, the description sufficiently explains the core function and key parameters. It misses only a brief explanation of max_price, which is a minor gap. The output schema exists but is not described, which is acceptable per rules.

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?

The description explains that from_airport and to_airport are IATA codes, destination_country is lowercase ISO2, and dates are ISO format. However, it does not cover max_price at all, and the relationship between to_airport and destination_country is unclear. With 0% schema coverage, the description partly compensates but leaves gaps.

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 explicitly states 'Search Ryanair one-way fares', identifying the specific airline and fare type. It clearly distinguishes from sibling tools like 'cheapest_per_day' and 'find_anywhere_under' by focusing on one-way fare searching with a departure window.

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?

No guidance is provided on when to use this tool versus its siblings (cheapest_per_day, explore_destinations, find_anywhere_under). There is no mention of when to choose this tool over alternatives or any when-not-to-use advice.

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