Katsem File Upload Link -

POST /api/upload HTTP/1.1 Host: katsem.example.com Authorization: Bearer <token> Content-Type: multipart/form-data

"status": "success", "file_id": "abc123", "download_url": "https://katsem.example/files/abc123", "expires_at": "2026-04-01T12:00:00Z", "size_bytes": 1048576, "mime_type": "application/pdf" katsem file upload link