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

Annotations already declare readOnly, idempotent, non-open-world, so the safety profile is covered. The description adds real behavioral context beyond them: defaulting to the current month in Dubai, the conditional indoor block inclusion based on group, and that limit samples long lists across groups. No auth, rate-limit, or error behavior is mentioned, but for a read-only lookup that is a minor gap.

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?

Three sentences, front-loaded with the core purpose and ending with a clear routing instruction. The middle sentence is somewhat list-heavy (verdict, tips, watch-outs, climate), but every clause carries distinct information and nothing is pure filler.

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 output schema, the description must describe returns, and it does thoroughly: plant lists per section, flowering/fruiting/harvest status, month verdict, tips, watch-outs, climate, and the indoor-plants block. Defaults and filter side effects are also stated, so an agent has everything needed 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?

Schema coverage is 100%, so all four parameters (group, limit, month, season) are already documented in the schema, including the month/season mutual exclusion and the group enum semantics. The description restates month/season scope and the group-driven indoor-block behavior but adds no syntax or format detail beyond the schema, so the baseline 3 is correct.

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 — what to sow and plant in Dubai for a month/season — and enumerates the accompanying payload (flowering, fruiting, harvest, verdict, tips, watch-outs, climate, indoor block). An agent can distinguish this from get_planting_calendar, get_plant, and get_indoor_plant_guide without opening any schema.

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?

Explicitly routes the agent: "Start here for any 'what should I plant now / in October / in summer' question," and explains that omitting group returns everything plus the indoor block while any other group excludes it. It stops short of naming the sibling tools an agent might otherwise confuse it with (e.g. get_planting_calendar), so no explicit when-not guidance.

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