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

With no annotations provided, the description carries the full behavioral burden, yet it discloses nothing about what the call produces (reference text vs. guided steps), whether content is static, or any safety caveats around breathing exercises. It only names topics covered, leaving the interaction model unstated.

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 front-loaded sentence with no wasted clauses, and the specific technique names lead the content list. The bracketed category tag '[數位健康與遠距醫療指南]' adds some prefix noise but supplies useful domain framing.

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 no-parameter reference tool with no output schema, the description does convey the scope of covered techniques, which is the key thing needed to decide to call it. It still omits how the content is returned and whether it is instructional or explanatory, leaving a gap given the absence of an output schema.

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 tool takes zero parameters, so the baseline of 4 applies. There is no parameter surface for the description to clarify or obscure.

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 enumerates the resource: relaxation breathing methods (box breathing, 4-7-8, resonance breathing, physiological sigh) plus their rhythm and appropriate timing. It is distinguishable from wellness siblings like score_gad7 or digital_wellness_guide. However, it lacks an explicit action verb (get/list/guide me through), so the agent must infer this is a reference-content tool.

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?

There is no statement of when to select this tool over alternatives such as wellness__digital_wellness_guide or the scoring tools. The phrase '適用時機' refers to when each breathing technique applies, not when the tool itself should be invoked, so no routing guidance is provided.

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