curl -X GET "https://api.altsportsleagues.ai/v1/valuation/tiers" \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "data": {
    "tiers": [
      {
        "tier": "1.x",
        "label": "Premium",
        "score_range": [800, 1000],
        "description": "Top-tier leagues with comprehensive data, live feeds, and proven betting markets"
      },
      {
        "tier": "2.x",
        "label": "Established",
        "score_range": [600, 799],
        "description": "Quality leagues with good data availability and growing market presence"
      },
      {
        "tier": "3.x",
        "label": "Emerging",
        "score_range": [400, 599],
        "description": "Developing leagues with potential, may need data quality improvements"
      },
      {
        "tier": "4.x",
        "label": "Early Stage",
        "score_range": [0, 399],
        "description": "New or niche leagues in early stages of data standardization"
      }
    ]
  },
  "meta": {
    "api_version": "v1",
    "timestamp": "2026-03-07T21:00:00Z"
  }
}