{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/numbers-api/main/json-schema/number-fact.json",
  "title": "NumberFact",
  "description": "A fact about a number returned by the Numbers API, including the fact text and associated metadata.",
  "type": "object",
  "required": ["text", "found", "number", "type"],
  "properties": {
    "text": {
      "type": "string",
      "description": "The fact text itself.",
      "examples": [
        "42 is the result given by Google and Bing for the query \"the answer to life the universe and everything\".",
        "42 is the 5th Catalan number.",
        "2013 is the year that China will attempt its first unmanned Moon landing.",
        "February 29 is the day in 1504 that Christopher Columbus uses his knowledge of a lunar eclipse to convince Native Americans to provide him with supplies."
      ]
    },
    "found": {
      "type": "boolean",
      "description": "Whether a fact was found for the requested number."
    },
    "number": {
      "type": "number",
      "description": "The floating-point number that the fact pertains to. For a date fact, this is the 1-indexed day of a leap year."
    },
    "type": {
      "type": "string",
      "description": "The category of the returned fact.",
      "enum": ["trivia", "math", "year", "date"]
    },
    "date": {
      "type": "string",
      "description": "A day of year associated with some year facts (e.g., 'June 6')."
    },
    "year": {
      "type": "string",
      "description": "A year associated with some date facts."
    }
  },
  "additionalProperties": false
}