curl -X GET https://scrape.st/track/x \
  -H "x-api-key: YOUR_API_KEY"

{
  "data": [
    {
      "id": "src_123",
      "name": "Elon Musk",
      "username": "elonmusk",
      "externalId": "elonmusk"
    },
    {
      "id": "src_456",
      "name": "Vercel",
      "username": "vercel",
      "externalId": "vercel"
    }
  ],
  "message": "2 sources tracked on x"
}