calculate_wallpaper_rolls

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

Without annotations, the description mentions pattern repeat and waste handling, which are beyond schema, but lacks details like rounding behavior or assumptions about doors/windows. The output is vaguely described as 'roll count and length needed.'

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 concise at three sentences, with the purpose stated first and inputs/outputs summarized. However, the inaccuracy in input description detracts from overall efficiency.

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?

Given the tool's mathematical nature and presence of an output schema, the description provides basic context but omits how pattern repeat is accounted for and the unit of perimeter. It is minimally sufficient but not thorough.

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?

Although input schema coverage is 100%, the description misleadingly lists 'walls m²' and 'pattern repeat' as inputs, while the schema expects perimeter and height and has no pattern repeat parameter. This adds confusion rather than clarifying parameter meanings.

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 clearly states the tool computes wallpaper rolls for a room including pattern repeat and waste, but it mentions 'walls m²' while the schema uses perimeter and height, causing slight ambiguity. It differentiates from sibling 'calculate_wallpaper' by specifying pattern repeat and waste, but not explicitly.

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?

The description says 'Use for renovation' but provides no explicit guidance on when not to use or how to choose between this and sibling tools like 'calculate_wallpaper'. The reference to 'list_bundles' for related calculators is vague and not directly actionable.

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