rb209_soil_nutrient_index_by_value_methodology_country

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

No annotations are provided, so the description carries the behavioral burden. It does disclose that this is a GET request and a singular 'individual item' lookup, signaling a read-only operation with a single result. It does not describe return structure, not-found behavior, or error semantics, but for a simple lookup the disclosed method and arity provide moderate 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 a single compact sentence with the endpoint path front-loaded and the result type stated immediately after the dash. There is no filler, repetition, or unnecessary explanation.

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 four-parameter GET endpoint, the path template plus fully documented schema makes invocation fairly straightforward. However, there is no output schema and no description of what the returned 'nutrient index item' actually contains, and no guidance on choosing among the many similar sibling tools, so the definition has meaningful gaps.

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 the baseline is 3. The description adds value by showing the URL path template, which clarifies that all four parameters are path segments in a specific order — meaning not available from the JSON schema alone. It otherwise repeats the parameter names rather than adding deeper semantics.

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 states an explicit verb and resource ('GET /api/Soil/NutrientIndex/... Individual nutrient index item') and lists all four filter dimensions, including countryId, which distinguishes it from the similar sibling rb209_soil_nutrient_index_by_value_methodology. It does not explicitly name a sibling alternative, but the resource and filters are specific enough.

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 phrase 'filtered by nutrient id, nutrient value, methodology id and country Id' implies when to use this tool: when the caller has all four identifiers and needs a single index item. However, it gives no explicit guidance on when not to use it or which sibling tool should be chosen instead, which is a real gap given the large set of soil-nutrient siblings.

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