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

No annotations are provided, so the description carries the full behavioral burden. It conveys only ordering-by-recency and reveals nothing about pagination, defaults for limit, required auth, or result volume for a list endpoint that can return up to 100 items.

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 short sentence with the core noun and the recency qualifier front-loaded; nothing is wasted. It is arguably under-specified rather than overly verbose, but structurally it is efficient.

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 listing tool with three parameters, no annotations, and no output schema, the description omits everything an agent needs beyond the bare purpose: ordering guarantees, pagination, filter semantics, and result shape. It is not sufficient to call the tool correctly without trial and error.

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 and it does not – limit, category, and platform are never explained. The two enum parameters are somewhat self-documenting through their allowed values, but there is no statement about defaults, combination behavior, or what an omitted filter means.

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-resource pair ("列出最新分享的影片與貼文" – list the latest shared videos and posts) and the word 最新 signals a recency-ordered listing. It is clear what the tool returns, but it never distinguishes itself from sibling search_shares or get_rankings, so an agent must infer the split.

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 when-to-use guidance, no exclusions, and no mention of the alternatives (search_shares for filtered lookups, get_rankings for ranked ordering). The agent is left to guess whether this is the right tool versus a sibling.

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