{
  "status": "error",
  "error_code": "missing_source_url",
  "details": "Missing URL. Send JSON {\"article_url\":\"https://...\"} (also accepts url, source_url, sourceUrl, link, articleUrl) OR use /analyze?url=https://...",
  "source_url": null,
  "title": null,
  "summary_text": "",
  "key_points": [],
  "key_points_bullets": "",
  "bias_notes": "",
  "confidence": 0,
  "credibility_score": 0,
  "share_summary": "",
  "share_bias": "",
  "share_credibility": "",
  "share_takeaway": "",
  "extraction_source": null
}