Craft Quantities · Schema
CalculateResult
CompanyConstructionCalculatorsEstimatingBuilding MaterialsOpen DataMCP
Properties
| Name | Type | Description |
|---|---|---|
| engine | object | |
| calculator | object | |
| system | object | |
| market | object | |
| inputs | array | Every input the calculation ran on, and where each came from. |
| result | object | |
| sources | array | |
| citation | object | |
| links | object | |
| licence | object | |
| notice | string | |
| explain | object | Only when explain is true. Each figure is the calculator's own; no step is a formula written for the engine. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://artifacts.apis.io/craftquantities-com/json-schema/craftquantities-com-calculate-result-schema.json",
"title": "CalculateResult",
"x-generated": "2026-11-04",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/_original/trades/craftquantities-com-auto-utility.json#/components/schemas/CalculateResult",
"type": "object",
"required": [
"engine",
"calculator",
"system",
"inputs",
"result",
"sources",
"citation",
"links",
"licence",
"notice"
],
"properties": {
"engine": {
"type": "object",
"required": [
"name",
"version",
"api"
],
"properties": {
"name": {
"type": "string"
},
"version": {
"type": "string"
},
"api": {
"type": "string"
}
}
},
"calculator": {
"type": "object",
"required": [
"slug",
"title",
"category",
"version",
"lastVerified",
"url",
"json"
],
"properties": {
"slug": {
"type": "string"
},
"title": {
"type": "string"
},
"category": {
"type": "string"
},
"description": {
"type": "string"
},
"version": {
"type": "string",
"description": "The calculator's own version; a result names the calculator that produced it."
},
"lastVerified": {
"type": "string",
"description": "The date the calculator's sources were last checked."
},
"url": {
"type": "string",
"description": "The calculator's page on craftquantities.com."
},
"json": {
"type": "string",
"description": "The calculator's static API document, with its test vectors."
}
}
},
"system": {
"enum": [
"metric",
"imperial"
]
},
"market": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"inputs": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"label",
"type",
"value",
"source"
],
"properties": {
"id": {
"type": "string"
},
"label": {
"type": "string"
},
"type": {
"enum": [
"number",
"select"
]
},
"value": {
"type": [
"number",
"string"
]
},
"dimension": {
"type": "string"
},
"baseUnit": {
"type": "string"
},
"source": {
"enum": [
"caller",
"default"
]
},
"read": {
"type": "string"
},
"metric": {
"type": "object",
"required": [
"value",
"unit"
],
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string"
}
}
},
"imperial": {
"type": "object",
"required": [
"value",
"unit"
],
"properties": {
"value": {
"type": "number"
},
"unit": {
"type": "string"
}
}
},
"option": {
"type": "string"
}
}
},
"description": "Every input the calculation ran on, and where each came from."
},
"result": {
"type": "object",
"required": [
"label",
"metric",
"imperial"
],
"properties": {
"label": {
"type": "string"
},
"metric": {
"type": "object",
"required": [
"value",
"unit",
"printed",
"breakdown",
"confidence",
"isComparison",
"canonical"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number",
"description": "The headline in this system; null where a rate it needs is not given."
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
},
"printed": {
"anyOf": [
{
"type": "string",
"description": "The headline exactly as the page prints it."
},
{
"type": "null"
}
]
},
"breakdown": {
"type": "array",
"items": {
"type": "object",
"required": [
"label",
"value",
"unit",
"printed"
],
"properties": {
"label": {
"type": "string"
},
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
},
"printed": {
"type": "string"
}
}
}
},
"confidence": {
"enum": [
"high",
"medium",
"low"
]
},
"confidenceNote": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"allowance": {
"anyOf": [
{
"type": "object",
"properties": {
"label": {
"type": "string"
},
"percent": {
"type": "number"
},
"base": {
"type": "number"
}
}
},
{
"type": "null"
}
]
},
"limitations": {
"type": "array",
"items": {
"type": "string"
}
},
"isComparison": {
"type": "boolean",
"description": "The figure is set against a limit. It is not an approval."
},
"withheld": {
"anyOf": [
{
"type": "object",
"properties": {
"missingRates": {
"type": "array",
"items": {
"type": "object",
"properties": {
"input": {
"type": "string"
},
"label": {
"type": "string"
}
}
}
}
}
},
{
"type": "null"
}
]
},
"canonical": {
"type": "object",
"required": [
"value",
"unit"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
}
},
"description": "The figure in the calculator's own unit, before the display adapter: what its test vectors pin."
}
}
},
"imperial": {
"type": "object",
"required": [
"value",
"unit",
"printed",
"breakdown",
"confidence",
"isComparison",
"canonical"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number",
"description": "The headline in this system; null where a rate it needs is not given."
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
},
"printed": {
"anyOf": [
{
"type": "string",
"description": "The headline exactly as the page prints it."
},
{
"type": "null"
}
]
},
"breakdown": {
"type": "array",
"items": {
"type": "object",
"required": [
"label",
"value",
"unit",
"printed"
],
"properties": {
"label": {
"type": "string"
},
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
},
"printed": {
"type": "string"
}
}
}
},
"confidence": {
"enum": [
"high",
"medium",
"low"
]
},
"confidenceNote": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"allowance": {
"anyOf": [
{
"type": "object",
"properties": {
"label": {
"type": "string"
},
"percent": {
"type": "number"
},
"base": {
"type": "number"
}
}
},
{
"type": "null"
}
]
},
"limitations": {
"type": "array",
"items": {
"type": "string"
}
},
"isComparison": {
"type": "boolean",
"description": "The figure is set against a limit. It is not an approval."
},
"withheld": {
"anyOf": [
{
"type": "object",
"properties": {
"missingRates": {
"type": "array",
"items": {
"type": "object",
"properties": {
"input": {
"type": "string"
},
"label": {
"type": "string"
}
}
}
}
}
},
{
"type": "null"
}
]
},
"canonical": {
"type": "object",
"required": [
"value",
"unit"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
}
},
"description": "The figure in the calculator's own unit, before the display adapter: what its test vectors pin."
}
}
}
}
},
"sources": {
"type": "array",
"items": {
"type": "object",
"required": [
"label"
],
"properties": {
"label": {
"type": "string",
"description": "The source as the calculator cites it."
},
"url": {
"type": "string",
"description": "Only where the calculator gives one; none is invented."
},
"references": {
"type": "array",
"items": {
"type": "object",
"required": [
"kind",
"document"
],
"properties": {
"kind": {
"enum": [
"code",
"standard"
]
},
"body": {
"type": "string"
},
"document": {
"type": "string"
},
"section": {
"type": "string"
},
"edition": {
"type": "string"
}
}
}
}
}
}
},
"citation": {
"type": "object",
"required": [
"author",
"title",
"url",
"formats",
"accessDate"
],
"properties": {
"author": {
"type": "string"
},
"title": {
"type": "string"
},
"version": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"sourcesChecked": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"url": {
"type": "string"
},
"accessDate": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"formats": {
"type": "object",
"required": [
"plain",
"apa",
"harvard",
"bibtex"
],
"properties": {
"plain": {
"type": "string"
},
"apa": {
"type": "string"
},
"harvard": {
"type": "string"
},
"bibtex": {
"type": "string"
}
}
}
}
},
"links": {
"type": "object",
"required": [
"page",
"open"
],
"properties": {
"page": {
"type": "string"
},
"open": {
"type": "string",
"description": "Opens the page on these inputs."
}
}
},
"licence": {
"type": "object",
"required": [
"name",
"url",
"attribution"
],
"properties": {
"name": {
"type": "string"
},
"url": {
"type": "string"
},
"attribution": {
"type": "string"
}
}
},
"notice": {
"type": "string"
},
"explain": {
"type": "object",
"required": [
"about",
"coverage",
"steps",
"final",
"limits"
],
"description": "Only when explain is true. Each figure is the calculator's own; no step is a formula written for the engine.",
"properties": {
"about": {
"type": "string"
},
"coverage": {
"enum": [
"intermediates",
"result-only"
],
"description": "result-only: the calculator reports no figures between its inputs and its result."
},
"steps": {
"type": "array",
"items": {
"type": "object",
"required": [
"n",
"kind",
"system",
"label",
"text"
],
"properties": {
"n": {
"type": "integer"
},
"kind": {
"enum": [
"input",
"intermediate",
"result",
"allowance",
"range",
"rates",
"display"
]
},
"system": {
"enum": [
"metric",
"imperial",
"both"
]
},
"label": {
"type": "string"
},
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "string"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string",
"description": "The calculator's own (base) unit for the value."
},
"metric": {
"type": "object",
"required": [
"value",
"unit"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
}
}
},
"imperial": {
"type": "object",
"required": [
"value",
"unit"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
}
}
},
"movedBy": {
"type": "array",
"items": {
"type": "string"
},
"description": "Input ids whose change moved this figure, measured by running compute again."
},
"source": {
"enum": [
"caller",
"default"
]
},
"text": {
"type": "string",
"description": "The step in words."
}
}
}
},
"final": {
"type": "object",
"required": [
"metric",
"imperial"
],
"properties": {
"metric": {
"type": "object",
"required": [
"value",
"unit",
"printed"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
},
"printed": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
}
},
"imperial": {
"type": "object",
"required": [
"value",
"unit",
"printed"
],
"properties": {
"value": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"unit": {
"type": "string"
},
"printed": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
}
}
}
},
"description": "The figures the answer returns, copied from it."
},
"limits": {
"type": "array",
"items": {
"type": "string"
},
"description": "What the trace does not show, and why."
}
}
}
}
}Work with this as data
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