check_country_requirements

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It states what the tool returns but does not mention side effects, authentication requirements, rate limits, or whether it modifies any state. The fact that it is a 'check' suggests a read-only operation, but this is not explicit.

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 two sentences long, with the first sentence stating the core purpose and example input, and the second enumerating the output types. Every word contributes clear information with no redundancy or fluff.

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 that an output schema exists, the description need not detail return values. It covers the main inputs and outputs well. However, it could be more complete by mentioning the optional direction parameter and its meaning, especially since the schema has no descriptions.

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 input schema has 0% coverage (no parameter descriptions), so the description must add meaning. It provides examples for country_code (US, FR, JP, AU), which adds value. However, it does not explain the direction parameter (e.g., import vs. export) or its default value, leaving a gap in understanding.

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's action ('Check pet import/export requirements'), specifies the input method ('by ISO code'), provides examples (US, FR, JP, AU), and lists the output types (vaccination, microchip, health certificate, quarantine, permit requirements). This distinguishes it from sibling tools like check_airline_policy and compare_airlines, which focus on different aspects.

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 implies usage for checking pet import/export rules for a country, but does not explicitly state when to use this tool versus alternatives like check_airline_policy or search_countries. It lacks exclusion criteria or contextual cues that would help an agent decide between siblings.

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