{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "MCF 1.0 question object",
  "type": "object",
  "required": [
    "id",
    "type",
    "prompt"
  ],
  "properties": {
    "id": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9._-]*$"
    },
    "type": {
      "enum": [
        "multiple_choice",
        "multiple_select",
        "true_false",
        "numeric",
        "short_answer",
        "essay"
      ]
    },
    "prompt": {
      "type": "string",
      "minLength": 1
    },
    "hint": {
      "type": "string"
    },
    "explanation": {
      "type": "string"
    },
    "points": {
      "type": "number",
      "minimum": 0
    },
    "required": {
      "type": "boolean"
    },
    "options": {
      "type": "array"
    },
    "answer": {},
    "tolerance": {
      "type": "number",
      "minimum": 0
    },
    "minimum_words": {
      "type": "integer",
      "minimum": 1
    },
    "minimum_sentences": {
      "type": "integer",
      "minimum": 1
    },
    "keywords": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "string",
        "minLength": 1
      }
    },
    "minimum_keywords": {
      "type": "integer",
      "minimum": 1
    }
  }
}