{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "draft": {
      "oneOf": [
        {
          "type": "object",
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            },
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            },
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            },
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              "type": "string",
              "pattern": "^[A-Z]{3}$"
            },
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              "maxItems": 12,
              "type": "array",
              "items": {
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                "properties": {
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                    "pattern": "^[a-z][a-z0-9_]{0,31}$"
                  },
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                  },
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                    "pattern": "^[+-]?(?:\\d{1,15}(?:\\.\\d{1,12})?|\\.\\d{1,12})$"
                  }
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                  "label",
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                  "integer",
                  "default",
                  "min",
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                ],
                "additionalProperties": false
              }
            },
            "output": {
              "type": "object",
              "properties": {
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                  "type": "string",
                  "minLength": 1,
                  "maxLength": 100
                },
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                  "maxLength": 2000
                },
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                    "volume"
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                  "minimum": 0,
                  "maximum": 12
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                "rounding": {
                  "type": "string",
                  "enum": [
                    "half-up",
                    "half-even"
                  ]
                }
              },
              "required": [
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                "expression",
                "kind",
                "decimals",
                "rounding"
              ],
              "additionalProperties": false
            },
            "assumptions": {
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              "maxItems": 10,
              "type": "array",
              "items": {
                "type": "string",
                "minLength": 1,
                "maxLength": 400
              }
            }
          },
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            "description",
            "currency",
            "inputs",
            "output",
            "assumptions"
          ],
          "additionalProperties": false
        },
        {
          "type": "object",
          "properties": {
            "kind": {
              "type": "string",
              "const": "clarification"
            },
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              "maxItems": 5,
              "type": "array",
              "items": {
                "type": "string",
                "minLength": 1,
                "maxLength": 400
              }
            }
          },
          "required": [
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          ],
          "additionalProperties": false
        }
      ]
    }
  },
  "required": [
    "draft"
  ],
  "additionalProperties": false,
  "$id": "https://usecalculator.app/specs/model-proposal.schema.json"
}