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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description restates 'Read-only' (redundant) but adds genuinely non-structured detail about the area field being geodesic with holes subtracted. With annotations carrying the behavioral burden, a 3 is appropriate.

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?

A single dense sentence that front-loads the verb and resource before listing fields. It is slightly overloaded with parenthetical detail ('geodesic, holes out'), but every clause carries information and nothing is padding.

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?

With no parameters, full annotation coverage and an output schema present, this definition is essentially complete. The description even summarizes the return fields, which the output schema would have covered anyway, leaving no meaningful gap 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 tool takes zero parameters, so there are no parameter semantics to explain. The description compensates by documenting the shape of the result set instead, which is the relevant information at this call site.

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?

States a specific verb and resource ('List the farms in this organisation's record') and enumerates the fields returned, so the agent knows exactly what it gets. It does not explicitly differentiate itself from siblings such as eudr_check_plots or eudr_compliance_status, but the resource is unambiguous.

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 when-to-use guidance, no mention of prerequisites, and no reference to alternatives among the 20 sibling tools. The 'Read-only' note hints at safe retrieval, but an agent gets no help deciding between this and tools like eudr_check_plots or eudr_compliance_status.

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