curl --request GET \
  --url https://app.autoposting.ai/api-proxy/kbs \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": [
    {
      "id": "kb_01HXYZ",
      "name": "Acme Product Docs",
      "documentCount": 12,
      "createdAt": "2024-01-01T00:00:00Z"
    }
  ]
}