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

The description adds nothing beyond the annotations (readOnlyHint=false, openWorldHint=true). It does not state result limits (pageSize max 10 implies a capped result set), pagination behavior, rate limits, or whether an API key/subscription is required — all material for a network-backed search call.

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?

It is short, but the brevity is under-specification rather than economy: a single sentence that duplicates the title conveys no operational information. There is no front-loaded statement of purpose or scope to justify the space it takes.

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?

With 7 parameters, no output schema, and an open-world network call, the description supplies nothing an agent needs — no result shape, no pagination/ceiling guidance, no relationship to the live detail tool. It is completely inadequate for the complexity of the tool.

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 100%, so every parameter (country, keyword, category, sort, page, pageSize, productCategory) is already documented in the schema. The description contributes no additional syntax or format guidance, so the baseline of 3 applies.

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 is a restatement of the title and endpoint path ("lives/search API") rather than an explanation of what the tool does. An agent can infer it searches TikTok livestreams, but there is no verb-object statement and no differentiation from the many adjacent CJ siblings such as nexscope_data_cj_lives_detail or the Chuhaijiang TikTok live search tools.

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 guidance on when to call this versus nexscope_data_cj_lives_detail, nexscope_data_cj_creators_related_lives, or the competing TikTok live search endpoints. The only signal is the word "search" in the name, which is inference, not instruction.

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