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

With annotations already declaring readOnlyHint, idempotentHint, and openWorldHint=false, the safety profile is covered. The description adds useful context beyond annotations by naming the data source (WMO 1991–2020 normals) and specifying that months include garden and pool tasks, though it does not describe return structure or any operational caveats.

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 front-loaded sentence enumerates the returned data without redundancy or filler. Every clause contributes a distinct piece of information.

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 zero-parameter, read-only lookup with no output schema and rich annotations, the description fully specifies what the tool returns. An agent needs no additional input details or behavioral caveats to call it correctly.

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 has zero parameters, so there are no input semantics to clarify. The schema is empty and complete; the description appropriately does not invent parameter details.

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 exactly what data is returned: Dubai's monthly average high/low temperatures, rainfall, planting season, summer work-ban months, and garden/pool tasks per month. It is specific enough to distinguish this Dubai-focused tool from generic siblings like get_planting_calendar or what_to_plant.

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 only lists the content of the tool and gives no explicit guidance on when to use it versus alternatives such as get_planting_calendar, get_kitchen_garden_guide, or what_to_plant. There are no conditions, exclusions, or routing hints for the agent.

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