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

No annotations are provided, so the description must carry the full behavioral burden. It discloses no side effects, return shape, failure modes, or even concrete operation semantics—'convert map to range' is ambiguous and lacks any behavioral detail beyond a restatement of the 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 but under-specified rather than concise: the 'Map To Range:' prefix duplicates the tool name and the restated sentence adds no information. Front-loading cannot compensate for the absence of substantive content.

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 parameters, no annotations, and no output schema, the description is the only source of context, yet it leaves the operation ambiguous and cannot be used to select the tool from a large set of mapping/normalization siblings. The definition is not usable for correct invocation.

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 zero properties, so there are no parameters for the description to document; the 100% schema coverage and 0-param rule make a high score appropriate. Still, the description misses the chance to clarify that no arguments are accepted or how inputs are otherwise supplied.

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 'Convert map to range' essentially restates the tool name 'Map To Range' without clarifying whether 'map' is a data structure, a value-to-value mapping, or a transformation target, and it does not distinguish this from sibling tools like x402-map-value or x402-lerp. It is a tautology rather than a specific verb+resource statement.

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 instead of any of the many mapping/interpolation siblings, no context, and no exclusion criteria. The lone phrase gives the agent no way to route between x402-map-to-range, x402-map-value, x402-remap, or x402-interpolate.

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