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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, so the safety profile is covered structurally. The description adds nothing beyond that — no note on what data is fetched, what an open-world lookup implies, rate limits, or failure behavior for unknown livestream IDs.

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 single sentence is free of padding, but that is brevity born of under-specification rather than disciplined editing. Nothing useful is front-loaded because nothing beyond the endpoint name is stated.

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?

This is a five-parameter detail-fetch tool with no output schema, so the description carries real explanatory burden — what fields a livestream detail returns, what region/currency/language/dateRange actually affect. None of that is present, leaving the agent to call it blind.

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 all five parameters (including the required livestreamId and its provenance 'from the list') are documented in the schema itself. The description contributes no additional meaning, which is acceptable at this coverage level but earns no credit above baseline.

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: it names the provider ('TikTok Intelligence KD') and an endpoint path ('livestream/detail API') but supplies no verb or statement of what the tool actually returns. An agent cannot distinguish it from siblings like nexscope_data_kd_livestream_rank, nexscope_tiktok_livestream_analytics, or nexscope_chuhaijiang_tiktok_live_detail without inferring from the name alone.

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 prerequisites, and no mention of any alternative. With several near-identical livestream tools in the sibling list, the absence of routing guidance leaves selection entirely to guesswork.

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