curl --request GET \
  --url http://co-mind-platform-host/v1/knowledgebases \
  --header 'Authorization: Bearer <token>'

{
  "object": "list",
  "data": [
    {
      "id": "kb_abc123",
      "object": "knowledgebase",
      "name": "My Knowledge Base",
      "description": "Technical documentation",
      "is_private": true,
      "created_at": 1699564800,
      "updated_at": 1699564800,
      "file_count": 5,
      "size_bytes": 102400
    }
  ]
}