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

No annotations exist and the description discloses no behavioral traits—no mention of inputs, outputs, side effects, or edge cases. The description is completely uninformative.

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 extremely short but this is under-specification rather than conciseness—it repeats the name without adding any informative content. It does not earn its place as a helpful definition.

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 an empty input schema, the description is the only information source, and it is entirely absent of substance. An agent cannot determine what this tool does, how to invoke it, or what it returns.

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?

Per the rubric, a tool with 0 parameters receives a baseline of 4 since there is no schema burden to compensate for. Still, the description adds no meaning about what values the inverse-lerp operation requires.

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 exactly 'Inverse Lerp: Inverse Lerp', which merely restates the tool's name and title without any verb, resource, or functional explanation. It does not distinguish this tool from siblings like x402-lerp, x402-lerp-value, or x402-interpolate.

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 on when to use this tool versus alternatives such as x402-lerp, x402-map-to-range, or x402-remap. No context, prerequisites, or exclusions are provided.

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