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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is covered. The description adds critical behavior beyond annotations: it explains that an empty CurrentStorms list does NOT mean a quiet basin — you must check the 'areas watching' section and the explicit all-clear condition. This prevents agent misinterpretation of the output schema.

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, each earning its place: scope, source, and an important edge-case clarification about the all-clear. Front-loaded with the key resource (Atlantic tropical cyclones). Zero filler, highly efficient.

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?

No parameters, output schema exists, and annotations cover the safety profile. The description addresses the most plausible pitfall (misinterpreting an empty CurrentStorms list). Even though it doesn't describe the output format, the output schema fills that gap. Complete for an agent to call 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 schema has zero parameters, so the baseline is 4. The description correctly refrains from adding parameter info. It doesn't harm; the score is based on the absence of any need. No added value needed.

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 ('Get'), resource ('Atlantic tropical outlook'), and scope (active cyclones + unnamed development areas from NOAA NHC, with formation chances). Clearly distinguishes from sibling weather tools like get_forecast and get_current_conditions by narrowing to tropical cyclones and Atlantic basin coverage.

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?

Specifies the season (June–November) and location (Crosby, TX), which tells the agent when this tool is relevant. Doesn't explicitly name alternatives to exclude, but the specificity of 'Atlantic tropical cyclones' plus sibling names makes the use case clear. Slight deduction for not explicitly stating 'use only during hurricane season for tropical info vs. other weather tools'.

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