search_countries_by_name

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

The description does not disclose behavioral traits such as whether the search performs partial or exact matching, any side effects (likely none), or pagination behavior. With no annotations, the description fails to inform the agent about important aspects like rate limits or result structure.

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 very concise (one sentence), but it is under-specified for a tool with 7 parameters. It lacks structure and does not earn its place; it could be expanded without becoming verbose.

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 complexity (7 parameters, no output schema, many sibling tools), the description is insufficient. It does not explain what the search returns, how to use pagination, or any constraints. There is no mention of default behavior or performance considerations.

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 all parameters are described in the schema. The description adds no additional meaning beyond 'search by name'. It does not clarify how parameters like 'include', 'select', or 'filters' interact with the search, but since the schema is complete, the baseline of 3 is appropriate.

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 'Search countries by name' clearly states the verb (search), resource (countries), and scope (by name). It distinguishes itself from sibling tools like get_all_countries by indicating a search function, but does not differentiate from other search tools like search_cities_by_name solely based on the resource name.

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 vs alternatives (e.g., get_all_countries, get_country_by_id, or other search tools). There is no context on scenarios where search is preferred over retrieval or filtering by other parameters.

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