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

No annotations are provided, so the description carries full behavioral disclosure. It does not state whether the operation is deterministic, what happens with out-of-range values, whether min/max are inclusive, or what the return format is. These are important for a mapping tool and are entirely absent.

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 a single short sentence, which is concise, but it is under-specified rather than efficiently informative. It fails to front-load the key semantic distinction needed to differentiate from siblings.

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 3-parameter tool with no annotations and no output schema, the description is insufficient. It does not clarify the transformation semantics, edge cases, or return values, leaving the agent with little beyond the tool name to work with.

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?

Schema description coverage is 100%, so each parameter is already documented in the schema ('Max to process', 'Min to process', 'Value to process'). The description adds no meaning beyond what the schema provides, which sets the baseline at 3.

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 states a specific verb and resource ('Convert map to range'), but 'map' is ambiguous—it could refer to a data structure, a geographical map, or a mapping relation. In the context of siblings like x402-map-value, x402-remap, and x402-lerp-value, the intended operation (likely linear rescaling) is not made clear from the description alone.

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. The sibling x402-map-value and x402-remap appear closely related, but the description offers no context, preconditions, or exclusions to help the agent choose.

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