lean_body_mass

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

Discloses the Boer formula and parameter units, which adds value beyond the schema. However, does not describe the output format (presumably LBM in kg) or address edge cases. No annotations are provided to supplement.

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?

Extremely concise: a single sentence for purpose and a bullet-point list for parameters. No wasted words; front-loaded with the main action.

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?

Adequately covers the calculation details for a simple tool. Missing explicit output description and differentiation from sibling health calculators. Could better address what the result represents.

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?

With 0% schema description coverage, the description effectively explains each parameter's unit (kg, cm, years) and the default 'male' for sex. Adds meaning beyond the raw schema types but lacks constraints like valid ranges.

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?

Clearly states 'Calculate lean body mass (LBM) using Boer formula' – specific verb and resource. Distinguishes from siblings by specifying a unique formula, but does not explicitly differentiate from similar body calculators.

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?

No guidance on when to use this tool versus alternatives like BMR or body fat calculators. The mention of 'Boer formula' implies usage for LBM estimation, but no context about appropriate users or situations.

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