{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Source Extract",
  "description": "Extracted content from a single web source for ingestion",
  "type": "object",
  "required": ["url", "title", "summary", "key_concepts"],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "Original URL that was fetched"
    },
    "title": {
      "type": "string",
      "description": "Article or page title"
    },
    "author": {
      "type": "string",
      "description": "Author name"
    },
    "date": {
      "type": "string",
      "description": "Publication date"
    },
    "summary": {
      "type": "string",
      "minLength": 50,
      "maxLength": 3000,
      "description": "Summary of the source content"
    },
    "key_concepts": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["concept", "description"],
        "properties": {
          "concept": {
            "type": "string",
            "description": "Name of the key concept"
          },
          "description": {
            "type": "string",
            "description": "Explanation of the concept as presented in the source"
          }
        }
      },
      "description": "Key concepts extracted from the source"
    },
    "notable_quotes": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["text"],
        "properties": {
          "text": {
            "type": "string",
            "description": "Direct quote"
          },
          "context": {
            "type": "string",
            "description": "Context for the quote"
          }
        }
      },
      "description": "Notable direct quotes from the source"
    },
    "author_year_key": {
      "type": "string",
      "pattern": "^[A-Z][a-zA-Z]+[0-9]{4}[a-z]?$",
      "description": "Suggested AuthorYear key for bibliographic note (e.g., Willison2026)"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time"
    }
  }
}