kinetic_energy_calc

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

With no annotations, the description carries the full burden of disclosing behavior. It reveals only the cost ($0.001 USDC via x402) but does not mention what inputs are required, whether it performs a pure calculation, or what the output looks like. This is a significant gap for a tool that takes arbitrary JSON parameters.

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 very short, but it uses valuable characters on category labeling ('Other Utilities tool') and cost rather than explaining the tool's actual purpose or usage. It is concise but not effectively structured to convey essential information.

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?

For a physics calculation tool with no output schema and a completely generic input schema, this description is grossly inadequate. It does not state what inputs the tool expects, what calculation is performed, or what the result represents, leaving the agent unable to use the tool 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 schema has a single generic 'params' object wrapper with no actual properties, so the schema provides no meaningful parameter information. The description fails to compensate by not mentioning mass, velocity, or any required fields, leaving the agent to guess what to put inside the params object.

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 essentially restates the tool name 'kinetic energy calc' and adds a category label 'Other Utilities tool.' It implies calculating kinetic energy but does not specify the inputs or formula, and it does not distinguish the tool from sibling physics calculators like force_calc or momentum_calc.

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 on when to use this tool versus alternatives, nor are any prerequisites or typical use cases mentioned. The only extra information is the payment cost, which is not a usage guideline.

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