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

No annotations are present, so the description carries the full behavioral disclosure burden. It only says 'calculation,' revealing nothing about inputs, output shape, constraints, or side effects. This is effectively as uninformative as the tool name.

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 text is short with no filler, but the brevity is under-specification rather than disciplined conciseness. It omits essential operational details while contributing nothing beyond the name.

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, no parameters, and a closely named sibling x402-aspect-ratio-calc, the description is far too incomplete for an agent to know what input it consumes, what computation is performed, or what result 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?

The input schema is empty and schema description coverage is 100%, so there are no parameter semantics for the description to add. With zero parameters, the description is not responsible for documenting parameter meaning.

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 essentially the tool name restated: 'Aspect Ratio: Aspect ratio calculation.' It states no concrete operation beyond the name and does not differentiate this tool from the sibling x402-aspect-ratio-calc. An agent cannot tell what this tool actually does or how it is distinct.

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?

There is no guidance about when to use this tool, when to avoid it, or when to prefer a sibling such as x402-aspect-ratio-calc. The description provides no selection context, prerequisites, or exclusions.

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