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

With no annotations provided, the description carries more burden, but it does disclose the data source (人事行政總處辦公日曆) and what is included, such as today's holiday status and the next long weekend. It does not describe output format, error behavior, or read-only status explicitly, though '取得' implies a read operation.

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 well-structured sentence that front-loads the purpose, then adds source and content scope. Every element is relevant and there is no unnecessary repetition.

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 read-only query tool with one optional parameter and no output schema, the description gives enough context about what is returned: holidays, long weekends, make-up days, today's status, and the next long weekend. It is slightly incomplete because it does not help disambiguate from sibling holiday tools.

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?

There is one optional parameter and schema description coverage is 100%, so the schema already explains the year parameter and its default behavior. The description adds no parameter-specific meaning beyond what the schema provides, making the baseline 3 appropriate.

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 a specific verb and resource: retrieving Taiwan national holidays, long weekends, and make-up work days based on the official government calendar. It also notes it includes today's holiday status and the next long weekend. However, it does not explicitly distinguish itself from related siblings such as life__is_holiday or trip__taiwan_holidays.

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 provides no explicit when-to-use or when-not-to-use guidance, and it does not mention alternatives. An agent must infer that this is for querying Taiwan holiday data, with no routing help against nearby tools like life__is_holiday.

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