curl --request GET \
  --url https://api.withallo.com/v2/api/tags \
  --header 'Authorization: <api-key>'

{
  "data": [
    {
      "id": "tag-abc123",
      "name": "qualified",
      "color": "#00AA00"
    },
    {
      "id": "tag-def456",
      "name": "follow_up",
      "color": "#FF8800"
    }
  ]
}