Get Daily Forecast

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

Annotations declare readOnly, idempotent, and non-destructive behavior, covering the safety profile. The description adds no additional behavioral context such as return format, units, or any constraints beyond what the schema already specifies. It is not misleading but adds minimal value.

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 concise sentence that directly states the core purpose without any fluff or redundancy. It is perfectly sized and front-loaded, with every word earning its place.

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 forecast tool with complete parameter schemas and robust annotations, the description is minimally adequate. However, it does not mention output structure or nuances like default days or range limits, relying entirely on the schema. Given the low complexity, this is acceptable but not exceptional.

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 description coverage is 100% for all parameters, and the description adds no extra explanation of latitude, longitude, or days beyond what the schema provides. Baseline 3 is appropriate since the schema fully documents parameters.

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 clearly states the tool retrieves a daily weather forecast for a location. The verb 'get' and resource 'daily weather forecast' are specific, and the name itself differentiates from sibling get_current_weather, though the description does not explicitly mention that distinction.

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?

No guidance is provided on when to use this tool versus alternatives like get_current_weather, or any conditions for use. The description simply states the function without contextual direction.

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