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tresor4k

macalc

calculate_rainwater_collection

Calculate the annual volume of rainwater that can be collected from a roof. Input roof area, rainfall, and efficiency to estimate harvest potential for water conservation planning.

Instructions

Estimate annual rainwater collection volume from a roof. See list_bundles for related 'astronomie-nature' calculators.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
roof_area_m2YesRoof catchment area in square metres
annual_rainfall_mmYesAverage annual rainfall in millimetres
efficiency_pctNoCollection efficiency percentage (default 80%)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultNoComputed result. Object whose fields depend on the tool (e.g. {tax, marginal_rate, brackets} for tax tools, {volume_l, gallons} for volume tools).
formulaNoHuman-readable formula or method used (e.g. "I=P·r·t", "Magnus formula").
sourceNoAuthoritative source for the rule or formula (e.g. "Article 197 CGI", "NF DTU 21").
reference_urlNoLink to a calcul2 page documenting the calculation in detail.
Behavior2/5

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

No annotations are provided, and the description lacks disclosure of behavioral traits beyond the basic purpose. It does not mention side effects, authentication, or other behaviors, relying entirely on the implicit nature of a calculator.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description consists of two concise sentences: the first stating the purpose, the second pointing to related tools. No wasted words, front-loaded with essential information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simple calculator nature, full schema coverage, and presence of an output schema, the description is mostly complete. It could mention that it is a stateless calculation with no side effects, but overall adequate.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% coverage with well-described parameters. The description adds no additional meaning beyond what the schema provides, so a baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Estimate annual rainwater collection volume from a roof.' It uses a specific verb ('estimate') and resource ('annual rainwater collection volume') uniquely distinguishing it from a vast list of sibling tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description mentions 'See list_bundles for related "astronomie-nature" calculators,' providing a pointer to related tools but no explicit guidance on when to use this tool versus alternatives or exclusions.

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

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