rb209_grass_growth_classes

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

No annotations are provided, so the description carries the full behavioral burden. It does disclose that this is a read-only GET operation and that it returns the full list, which suggests no pagination. However, it does not mention output shape, authentication needs, error behavior, or what fields each growth class contains. This is minimal but acceptable disclosure for a simple reference-list endpoint.

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, efficient sentence that front-loads the HTTP verb and endpoint before stating the purpose. There is no filler or redundant information; every word earns its place.

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 one-parameter list endpoint, this is adequate: it names the endpoint, the parameter, and the returned resource. However, with no output schema, it does not describe the structure of the returned grass growth classes, and it does not point to where valid countryId values can be obtained. These gaps prevent a higher score.

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%, with countryId already described as 'The Country ID to filter on'. The description adds that the ID is used in the URL path, but provides no example values, no valid country ID source, and no additional semantics beyond the schema. A baseline 3 is appropriate given the 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 clearly identifies the endpoint and resource: a full list of grass growth classes for a country. It uses a specific verb ('GET') and states the domain ('grassland fields'). It does not explicitly distinguish itself from sibling tools like rb209_grass_growth_class_by_class or rb209_grass_growth_class_by_soil_type_rainfall_altitude_chalk, so it falls short of a 5.

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?

There is no guidance about when to use this tool versus the many related grass growth class tools in the sibling list. 'Full list' faintly implies this is the general list endpoint, but there is no explicit when-to-use, when-not-to-use, or alternative routing. The agent must infer the appropriate context.

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