get_sunrise_sunset_times

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

No annotations are provided, placing the full burden on the description. It only states basic purpose and does not disclose behavioral traits such as timezone handling, behavior when month/day are omitted, or read-only nature. The description adds no context beyond the function.

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?

The description is a single, concise sentence with no unnecessary words. It is front-loaded with the action verb and contains only essential 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?

While the output schema exists to document return values, the description still lacks critical handling information: how optional month/day parameters behave, what lang controls, and any timezone context. For a multi-parameter tool with no annotations or parameter docs, this is insufficient.

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 0%, so the description must compensate for the four parameters (year, month, day, lang). It mentions none of them, providing no additional meaning about their roles, defaults, or relationships. The parameter names are self-explanatory, but the description fails to aid in correct invocation.

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 uses a specific verb 'Get' with concrete resources 'times of sunrise, sun transit and sunset' and geographic scope 'for Hong Kong'. It clearly distinguishes this tool from sibling tools like get_moon_times by naming solar events.

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 clearly states its context (Hong Kong solar times), which sufficiently implies when to use it. However, it does not explicitly mention alternatives or exclusion scenarios, though the unique domain among siblings makes the context clear.

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