get_country

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

The description adds no behavioral details beyond what the annotations already state (readOnlyHint=true, destructiveHint=false, idempotentHint=true). It simply restates the tool's name in sentence form without providing any additional context such as return behavior, error handling, or data format.

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 a single, concise sentence with no unnecessary words, making it efficient and easy to parse. It does not waste space, though it could include a bit more context without losing brevity.

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 tool with one parameter and strong annotations, the description is minimally adequate. However, it does not mention what the response contains (e.g., country details) or what happens if the country_id does not exist, leaving some gaps for an agent.

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 fully documents the only parameter, country_id, with the description 'the id of the country'. The tool description adds no further semantic meaning, so the score is at baseline for high schema coverage.

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 'Fetch a country' clearly states the action (fetch) and resource (country), making the tool's purpose immediately apparent. It distinguishes get_country from sibling tools like create_country, update_country, delete_country, list_countries, and search_countries, though it does not explicitly mention retrieval by ID.

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 no guidance on when to use this tool versus alternatives such as list_countries or search_countries. It does not explain that this is for retrieving a single country by ID, nor does it mention any exclusions or prerequisites.

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