lunaar_body_estimation

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

No annotations present, so description must cover all behavioral aspects. It only states the action and credit cost, omitting details like return format, failure modes, or specific image requirements (e.g., lighting, pose).

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?

Two sentences, zero waste. Front-loaded with the core action and credit cost. Every word earns its place.

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 and description does not mention return values (e.g., which measurements, units, or confidence). Also lacks details on validation or error handling, leaving the agent underinformed about what to expect.

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 coverage is 100% with descriptive parameter descriptions. The tool description adds no extra parameter meaning beyond what the schema already provides, so baseline 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 clearly states the verb 'Extract' and the resource 'anatomical measurements (chest, waist, hip)', and specifies the input (single full-body photo). It effectively distinguishes from sibling tools that focus on try-on, sketches, or product shots.

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?

The description indicates the input type (full-body photo) and mentions credit cost, but lacks explicit guidance on when to use versus alternatives, no prerequisites or exclusions.

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