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

With no annotations provided, the description carries the burden and does real work: it discloses the full set of returned fields and a notable constraint that contact details (phone etc.) are not exposed externally. It does not mention error behavior for an invalid guideKid or any auth/rate-limit concerns.

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 dense but well-ordered sentence that front-loads the purpose and then lists return contents, then adds the parameter source and the privacy caveat. No filler, though the return-field enumeration is long enough that a list form would scan faster.

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?

No output schema exists, so the description compensates by enumerating the returned fields and the actionable H5 links, plus the contact-info exclusion. It is essentially complete for a simple single-parameter lookup; only failure/invalid-identifier handling is unaddressed.

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?

Only one parameter, and the schema already describes guideKid at 100% coverage. The description adds provenance value by stating the identifier originates from search_guides results, which helps the agent source a valid value.

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?

States a specific verb (获取) and resource (指定向导的详细信息), then enumerates exactly what is returned: intro, specialties, day/hour pricing, order volume, and H5 links for profile/chat/booking. This clearly separates it from the sibling search_guides, which only lists guides.

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?

Explicitly ties the call to a prior search_guides result ('入参 guideKid 来自 search_guides 结果') and states the intended follow-up action (recommend links so users contact or book). It does not spell out when NOT to use it or what to do if guideKid is unknown, but the usage context is clear.

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