{
  "schema_version": "1",
  "scenario_id": "news_source_discovery_v1",
  "name": "News Source Discovery V1",
  "description": "Find earliest news source using sequential stub tools.",
  "input_schema": {
    "type": "object",
    "required": [
      "url"
    ],
    "properties": {
      "url": {
        "type": "string",
        "description": "URL of source news article"
      }
    }
  },
  "steps": [
    {
      "name": "search_news_sources",
      "type": "tool"
    },
    {
      "name": "parse_articles_batch",
      "type": "tool"
    },
    {
      "name": "extract_publication_date_batch",
      "type": "tool"
    },
    {
      "name": "rank_sources_by_date",
      "type": "tool"
    },
    {
      "name": "generate_summary",
      "type": "tool"
    }
  ]
}