curl --request POST \
  --url https://api.attention.tech/v2/knowledge-base/sources/{sourceId}/confirm-upload \
  --header 'Authorization: <api-key>'

{
  "data": {
    "type": "kb_sources",
    "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "attributes": {
      "title": "Q4 Product Launch Playbook",
      "source_type": "manual",
      "content": "# Product Launch Playbook\n\n## Overview\nThis document covers the key steps...",
      "format": "text/markdown",
      "status": "indexed",
      "file_size": 4096,
      "chunk_count": 12,
      "created_at": "2025-01-15T10:30:00Z",
      "updated_at": "2025-01-15T10:35:00Z"
    }
  }
}