{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/event-registry/main/json-schema/event.json",
  "title": "Event",
  "description": "A news event — a cluster of related articles about the same real-world happening — returned by the Event Registry (NewsAPI.ai) API.",
  "type": "object",
  "properties": {
    "uri": {
      "type": "string",
      "description": "Unique event identifier (e.g. 'eng-12345678')."
    },
    "title": {
      "type": "object",
      "additionalProperties": { "type": "string" },
      "description": "Event title keyed by ISO language code (e.g. {'eng': 'AI Summit 2026'})."
    },
    "summary": {
      "type": "object",
      "additionalProperties": { "type": "string" },
      "description": "Auto-generated event summary keyed by ISO language code."
    },
    "articleCount": {
      "type": "integer",
      "description": "Number of articles grouped into this event cluster."
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "Approximate event date (YYYY-MM-DD)."
    },
    "dateStart": {
      "type": "string",
      "format": "date",
      "description": "Earliest article publication date for this event."
    },
    "dateEnd": {
      "type": "string",
      "format": "date",
      "description": "Latest article publication date for this event."
    },
    "sentiment": {
      "type": ["number", "null"],
      "minimum": -1,
      "maximum": 1,
      "description": "Average sentiment of articles in this event (-1 to +1)."
    },
    "concepts": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "uri": { "type": "string" },
          "type": {
            "type": "string",
            "enum": ["person", "org", "loc", "wiki"]
          },
          "score": { "type": "number" },
          "label": {
            "type": "object",
            "additionalProperties": { "type": "string" }
          }
        }
      },
      "description": "Key named entities associated with this event."
    },
    "categories": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "uri": { "type": "string" },
          "label": { "type": "string" },
          "wgt": { "type": "integer" }
        }
      },
      "description": "Topic categories for the event."
    },
    "location": {
      "type": ["object", "null"],
      "description": "Primary geographic location associated with the event.",
      "properties": {
        "uri": { "type": "string" },
        "label": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        },
        "type": { "type": "string" },
        "lat": { "type": "number" },
        "long": { "type": "number" },
        "country": {
          "type": "object",
          "properties": {
            "uri": { "type": "string" },
            "label": {
              "type": "object",
              "additionalProperties": { "type": "string" }
            }
          }
        }
      }
    },
    "images": {
      "type": "array",
      "items": { "type": "string", "format": "uri" },
      "description": "Representative images for the event."
    },
    "socialScore": {
      "type": "number",
      "description": "Aggregate social media engagement score."
    },
    "stories": {
      "type": "array",
      "description": "Sub-stories or related event clusters.",
      "items": {
        "type": "object",
        "properties": {
          "uri": { "type": "string" },
          "title": {
            "type": "object",
            "additionalProperties": { "type": "string" }
          },
          "articleCount": { "type": "integer" }
        }
      }
    }
  }
}