curl --request POST \
  --url https://api.ravan.ai/api/v1/rag/knowledge-base/{kb_id}/add-sources \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "knowledge_base_texts": [
    {
      "title": "<string>",
      "text": "<string>"
    }
  ],
  "knowledge_base_urls": [
    "<string>"
  ]
}
'

{
  "success": true,
  "message": "<string>",
  "data": {
    "knowledge_base": {
      "knowledge_base_id": "<string>",
      "knowledge_base_name": "<string>",
      "status": "<string>",
      "enable_auto_refresh": true,
      "knowledge_base_sources": [
        {
          "source_id": "<string>",
          "source_type": "<string>",
          "source_name": "<string>",
          "source_url": "<string>",
          "source_status": "<string>",
          "created_timestamp": 123
        }
      ],
      "created_timestamp": 123,
      "last_updated_timestamp": 123
    },
    "url_sources": [
      {
        "source_id": "<string>",
        "url": "<string>",
        "pages_found": 123,
        "status": "<string>"
      }
    ]
  }
}