curl --request GET \
  --url https://www.closient.com/sustainability/api/v1/products/{gtin}/sustainability \
  --header 'X-API-Key: <api-key>'

{
  "packaging": [
    {
      "id": 123,
      "public_id": "<string>",
      "packaging_type": "<string>",
      "description": "<string>",
      "is_recyclable": true,
      "is_reusable": true,
      "weight_grams": 123,
      "recycled_content_percentage": 123
    }
  ],
  "components": [
    {
      "id": 123,
      "public_id": "<string>",
      "name": "<string>",
      "description": "<string>",
      "quantity": 123,
      "component_type": "<string>",
      "is_separable": true,
      "separation_instructions": "<string>",
      "weight_grams": 123
    }
  ],
  "end_of_life_instructions": [
    {
      "id": 123,
      "instruction_type": "<string>",
      "description": "<string>",
      "valid_regions": "<string>",
      "collection_url": "<string>",
      "priority": 123
    }
  ],
  "environmental_impacts": [
    {
      "id": 123,
      "impact_type": "<string>",
      "score_value": 123,
      "unit": "<string>",
      "methodology_reference": "<string>",
      "notes": "<string>",
      "assessment_date": "2023-12-25"
    }
  ],
  "circularity": {
    "assessment_date": "2025-06-01",
    "durability_score": 8,
    "methodology": "EU Circular Economy Monitoring Framework",
    "overall_score": 7.5,
    "recyclability_score": 9,
    "repairability_score": 6,
    "reusability_score": 7
  },
  "recyclability": {
    "assessed_by": "RecycleSmart Labs",
    "assessment_date": "2025-03-01",
    "assessment_standard": "ISO 18604:2013",
    "conditions": "Rinse and remove cap before recycling.",
    "description": "PET plastic, widely recyclable.",
    "recyclability_code": "PET-1",
    "recyclability_percentage": 95,
    "recycling_instructions": "Place in curbside recycling bin.",
    "recycling_instructions_url": "https://example.com/recycle",
    "recycling_stream": "Plastics #1",
    "valid_regions": "US, CA, EU",
    "valid_until": "2026-03-01"
  }
}