curl "https://api.lemondata.cc/v1/cache/feedback/abc123" \
  -H "Authorization: Bearer sk-your-api-key"

{
  "object": "cache.feedback.stats",
  "entry_id": "abc123",
  "negative_feedback_count": 2,
  "total_hit_count": 18,
  "negative_feedback_rate": 0.1111,
  "at_risk": true
}