{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.com/schemas/whoop-co/whoop-sleep-schema.json",
  "title": "WHOOP Sleep",
  "description": "Schema for a WHOOP Sleep activity. Sleep activities can be primary nightly sleeps or short naps and include stage-by-stage breakdowns (light, slow-wave, REM), sleep performance percentage, and physiological measurements such as respiratory rate.",
  "type": "object",
  "required": ["id", "cycle_id", "user_id", "created_at", "updated_at", "start", "end", "timezone_offset", "nap", "score_state"],
  "properties": {
    "id": {"type": "string", "format": "uuid", "description": "Unique sleep identifier (v2 UUID)."},
    "v1_id": {"type": "integer", "format": "int64", "description": "Legacy v1 numeric ID (deprecated, sunsetting 2026)."},
    "cycle_id": {"type": "integer", "format": "int64", "description": "Physiological cycle this sleep belongs to."},
    "user_id": {"type": "integer", "format": "int64"},
    "created_at": {"type": "string", "format": "date-time"},
    "updated_at": {"type": "string", "format": "date-time"},
    "start": {"type": "string", "format": "date-time"},
    "end": {"type": "string", "format": "date-time"},
    "timezone_offset": {"type": "string"},
    "nap": {"type": "boolean", "description": "True if the activity is a nap rather than primary sleep."},
    "score_state": {"type": "string", "enum": ["SCORED", "PENDING_SCORE", "UNSCORABLE"]},
    "score": {
      "type": "object",
      "properties": {
        "stage_summary": {
          "type": "object",
          "properties": {
            "total_in_bed_time_milli": {"type": "integer"},
            "total_awake_time_milli": {"type": "integer"},
            "total_no_data_time_milli": {"type": "integer"},
            "total_light_sleep_time_milli": {"type": "integer"},
            "total_slow_wave_sleep_time_milli": {"type": "integer"},
            "total_rem_sleep_time_milli": {"type": "integer"},
            "sleep_cycle_count": {"type": "integer"},
            "disturbance_count": {"type": "integer"}
          }
        },
        "sleep_needed": {
          "type": "object",
          "properties": {
            "baseline_milli": {"type": "integer"},
            "need_from_sleep_debt_milli": {"type": "integer"},
            "need_from_recent_strain_milli": {"type": "integer"},
            "need_from_recent_nap_milli": {"type": "integer"}
          }
        },
        "respiratory_rate": {"type": "number", "format": "float"},
        "sleep_performance_percentage": {"type": "number", "format": "float"},
        "sleep_consistency_percentage": {"type": "number", "format": "float"},
        "sleep_efficiency_percentage": {"type": "number", "format": "float"}
      }
    }
  }
}