curl --request POST \
  --url https://api.egp.scale.com/v5/vector-stores/{vector_store_name}/upsert \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "vectors": [
    {
      "id": "<string>",
      "text": "<string>",
      "vector": [
        123
      ],
      "metadata": {}
    }
  ]
}
'

{
  "total_attempted": 123,
  "successful": 123,
  "failed": 123,
  "error_messages": [
    "<string>"
  ]
}