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

The description adds no behavioral context. While the annotations provide safe usage hints (readOnlyHint: true), the description itself is silent on implementation details like data scope or latency, failing to add value over the existing metadata.

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?

While concise (one sentence), it is completely uninformative. Every word is boilerplate and serves no structural or functional purpose for the AI agent. The lack of substance undermines the conciseness.

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?

Given the breadth of sibling tools available, the description is woefully incomplete. It fails to specify *which* data about creators' lives it retrieves, requiring the agent to guess the return payload based only on the title.

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?

Since the schema coverage is 100%, the schema fully defines all four parameters. The description adds no semantic meaning or clarifies the purpose of 'id' or 'country' beyond what the title already suggests. Baseline 3 is not met because the description adds no unique interpretative 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?

The description is purely tautological, repeating the tool's title ('TikTok Commerce Intelligence CJ: creators/related lives API'). It provides no functional insight into what data the tool actually returns or what its specific purpose is beyond its name.

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?

It offers no guidance on when to use this tool compared to other related tools (like other 'related lives' or 'creator' functions). An agent has no context for when this specific API call is appropriate.

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