calculate_materials

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the calculation function but reveals nothing about assumptions (e.g., units of measurement), whether the operation is read-only, what outputs are produced, or any limitations. This is a significant gap for a calculation tool.

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, front-loaded sentence with no filler words. It is appropriately concise, though it could benefit from a brief second clause or example to improve completeness without sacrificing readability.

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 moderate complexity (nested dimensions object, enums, no annotations, no output schema), the description is notably incomplete. It fails to specify what types of materials are calculated, the expected output format, units, or any constraints, leaving the agent with insufficient information to invoke the tool reliably.

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 0%, and the description does not compensate by explaining the meaning of 'structure' or 'dimensions' or their expected units. The schema property names are self-explanatory to a human, but the description adds no value over the structured fields, failing to meet the requirement for compensation at low coverage.

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 a specific action ('Calculate') and resource ('construction materials needed for basic structures'). It distinguishes from sibling 'estimate_cost' by focusing on materials rather than cost, though it could more explicitly enumerate the supported structure types.

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 provides no guidance on when to use this tool versus alternatives like 'estimate_cost'. It lacks explicit context about use cases or exclusions, leaving the agent to infer from the tool name alone.

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