curl --request GET \
  --url https://api.valyu.ai/v1/datasources/categories \
  --header 'x-api-key: <api-key>'

{
  "success": true,
  "categories": [
    {
      "id": "research",
      "name": "Research & Academic",
      "description": "Academic papers and research publications",
      "dataset_count": 4
    },
    {
      "id": "markets",
      "name": "Financial Markets",
      "description": "Real-time and historical market data",
      "dataset_count": 7
    },
    {
      "id": "healthcare",
      "name": "Healthcare & Medical",
      "description": "Clinical trials, drug information, and health data",
      "dataset_count": 4
    }
  ]
}