vo2max_calc

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

The only disclosed behavioral trait is the cost of $0.001 USDC via x402. No annotations exist, and the description fails to explain what the tool does, what data it returns, or any side effects. The cost disclosure is a positive addition but insufficient for fuller transparency.

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 description is concise, consisting of a single sentence that includes the cost. However, its brevity borders on under-specification: it omits essential functional details while providing a few extra words that don't clarify purpose.

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 no annotations, no output schema, and a generic input schema, the description needed to explain the tool's functionality, inputs, and outputs. It fails to do so, leaving the agent with no confidence in how to invoke it correctly.

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?

The input schema has only a generic 'params' object with no specified properties, and the description adds no information about required inputs such as age, gender, or resting heart rate. The schema description coverage is nominal but provides zero semantic value, leaving the agent without any parameter understanding.

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 only restates the tool name ('vo2max calc') and labels it a 'Health & Fitness tool,' without explicitly stating that it calculates VO2 max. This is essentially a tautology with a broad category, adding no specific verb or resource to define its function.

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 is provided for when to use this tool or how it differs from sibling health calculators such as bmi_calc or tdee_calc. There is no mention of required inputs, prerequisites, or alternative tools.

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