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

{
  "success": true,
  "categories": [
    {
      "id": "research",
      "name": "Research",
      "description": "Academic papers, preprints, and scholarly articles.",
      "dataset_count": 8
    },
    {
      "id": "healthcare",
      "name": "Healthcare",
      "description": "Medical literature, clinical trials, drug data, and health records.",
      "dataset_count": 6
    },
    {
      "id": "markets",
      "name": "Markets",
      "description": "Stock prices, earnings, SEC filings, and financial data.",
      "dataset_count": 5
    }
  ]
}