{
  "schema_version": 1,
  "subject": {
    "name": "株式会社CHIERO",
    "domain": "chiero.jp"
  },
  "measurement": {
    "date": "2026-08-10",
    "surface": "provider APIs with web search",
    "language": "ja",
    "engines": ["anthropic", "openai", "gemini"],
    "questions": 20,
    "repetitions_per_engine": 3,
    "attempts": 180,
    "successful_answers": 158,
    "errors": 22
  },
  "visibility": {
    "retrieved_answers": [17, 158],
    "mentioned_answers": [18, 158],
    "cited_answers": [16, 158],
    "estimated_recommended_answers": [17, 158],
    "questions_with_estimated_recommendation": [11, 12],
    "questions_with_estimated_recommendation_count": [2, 20]
  },
  "note_com": {
    "answers_whose_saved_source_domains_include_note_com": [42, 158],
    "questions_whose_saved_source_domains_include_note_com": [11, 20],
    "raw_url_occurrences": 128,
    "counting_note": "URL occurrences include duplicates within an answer. Answer and question counts use the per-answer saved domain list and are reported separately."
  },
  "limitations": [
    "Recommendation is a heuristic estimate based on wording and list placement, not a provider-supplied label.",
    "Twenty-two attempts failed and are excluded from the four visibility denominators.",
    "Eight changes were published as one bundle, so this measurement cannot identify the effect of an individual change.",
    "API results do not establish what every signed-in consumer interface shows.",
    "No inclusion, ranking, inquiry, or revenue outcome is guaranteed."
  ],
  "source_receipt": {
    "filename": "shindan_chiero_sample_20260810_190615.json",
    "sha256": "009a01c9f2037c4cf11bbeb7a703e1b3b2f0ef7145719985c987f201ce3a13b1",
    "immutable": true
  }
}