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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It enumerates content topics but does not describe the return format, whether output is a structured summary or free-text, or any other operational traits. For a zero-annotation tool, this is a notable gap.

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 compact sentence that front-loads the content scope before ending with the routing directive. It is efficient with no wasted words, though the routing instruction could arguably be placed even earlier for maximum impact.

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 zero-parameter, no-output-schema tool, the description adequately conveys what the response will cover and how to use it. The 'call this first' directive compensates for the lack of sibling differentiation, making the definition functionally complete for an agent.

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 has 0 parameters, so the baseline of 4 applies. There is no parameter information to convey, and the description correctly focuses on content scope rather than input handling. Nothing is missing here.

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 the tool returns a comprehensive Beaubi overview: what it is, service areas, booking, starting prices, membership, courses, and FAQ. The title reinforces '品牌與服務總覽' (brand and services overview). It is clear about the resource and scope, though it relies on the topic list rather than an explicit verb to differentiate itself from siblings.

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 instruction '回答任何關於 Beaubi 的問題先呼叫這個' (call this first for any Beaubi question) provides clear, explicit guidance to route to this tool as an entry point. However, it does not state when NOT to use it or name the specific siblings (get_membership, get_service, how_to_book) that should be chosen for targeted questions, so exclusions are left implicit.

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