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

No annotations are provided, so the description carries the full behavioral burden and delivers nothing: no indication of the formula used, expected units for the force values, whether the result is a ratio or a force, or any error behavior. This is a pure gap, not a lower bar.

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?

Three words that are a duplicate of the name. This is under-specification rather than conciseness – there is no front-loaded statement of what the tool computes, so nothing has been trimmed, only omitted.

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 meaningful parameter docs, and no formula or return-value information, the definition is wholly inadequate for an agent to invoke this tool correctly. Everything needed to call it must be guessed.

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?

Nominal schema coverage is 100%, but both field descriptions are placeholders ("InputForce to process", "OutputForce to process") that convey no units, format, or meaning. For a physics calculation, units (N, lbf, kg·m/s²) are essential and are documented in neither the schema nor the description.

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 reads "Mechanical Advantage: Mechanical Advantage" – a bare restatement of the tool name with no verb, resource, formula, or scope. It does not distinguish this tool from the many other physics/force calculators in the sibling list (e.g. x402-force, x402-efficiency, x402-impulse).

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 when-to-use, when-not-to-use, or alternative tool is mentioned. An agent cannot tell whether this computes a ratio, solves for a missing force, or something else, nor when to prefer it over x402-efficiency or x402-work.

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