diff --git a/bucket/fluxdown.json b/bucket/fluxdown.json
new file mode 100644
index 00000000000000..f64533deeae8e7
--- /dev/null
+++ b/bucket/fluxdown.json
@@ -0,0 +1,70 @@
+{
+    "version": "0.2.1",
+    "description": "A Rust-powered download manager with HTTP, FTP, BitTorrent and HLS/DASH streaming support.",
+    "homepage": "https://fluxdown.zerx.dev",
+    "license": {
+        "identifier": "AGPL-3.0-only",
+        "url": "https://github.com/zerx-lab/FluxDown/blob/main/LICENSE"
+    },
+    "notes": [
+        "FluxDown portable data persistence:",
+        "  - Built-in portable mode: runtime data stored in portable_data/ subdirectory",
+        "  - Download history and config persisted via portable_data/flux_down.db (SQLite)",
+        "  - BT session state (fast-resume) persisted via portable_data/bt_session/",
+        "  - UI settings (window state, theme, locale) persisted via portable_data/settings.json",
+        "  - Application logs persisted via portable_data/logs/",
+        "  - All data is preserved across updates",
+        "",
+        "Browser extensions (required for download interception):",
+        "  Chrome: https://chromewebstore.google.com/detail/fluxdown/meleenglfggcmcajknpeeeiobnpfmahc",
+        "  Firefox: https://addons.mozilla.org/firefox/addon/fluxdown",
+        "  Edge: https://microsoftedge.microsoft.com/addons/detail/fluxdown/nglkkjbogjghekbhhcnccnpfedjbdhhd",
+        "",
+        "Command-line client:",
+        "  https://github.com/zerx-lab/FluxDown/releases/tag/cli-v$version"
+    ],
+    "architecture": {
+        "64bit": {
+            "url": "https://github.com/zerx-lab/FluxDown/releases/download/v0.2.1/FluxDown-0.2.1-windows-x64-portable.zip",
+            "hash": "4ed7a96a64d84b2dff298a826b4c3754b57680c2309eef616cecd90030ee3508"
+        },
+        "arm64": {
+            "url": "https://github.com/zerx-lab/FluxDown/releases/download/v0.2.1/FluxDown-0.2.1-windows-arm64-portable.zip",
+            "hash": "f4befd9db25a83d743b717cafd979c64c084b8a8074e26e3aee6cec569ddef75"
+        }
+    },
+    "pre_install": [
+        "if (!(Test-Path \"$dir\\portable_data\")) { New-Item -ItemType Directory \"$dir\\portable_data\" -Force | Out-Null }",
+        "if (!(Test-Path \"$dir\\flux_down.db\")) { New-Item -ItemType File \"$dir\\flux_down.db\" -Force | Out-Null }",
+        "if (!(Test-Path \"$dir\\settings.json\")) { Set-Content \"$dir\\settings.json\" '{}' -Encoding UTF8 }"
+    ],
+    "shortcuts": [
+        [
+            "flux_down.exe",
+            "FluxDown"
+        ]
+    ],
+    "persist": [
+        "flux_down.db",
+        "bt_session",
+        "settings.json",
+        "logs",
+        "portable_data"
+    ],
+    "checkver": {
+        "github": "https://github.com/zerx-lab/FluxDown"
+    },
+    "autoupdate": {
+        "architecture": {
+            "64bit": {
+                "url": "https://github.com/zerx-lab/FluxDown/releases/download/v$version/FluxDown-$version-windows-x64-portable.zip"
+            },
+            "arm64": {
+                "url": "https://github.com/zerx-lab/FluxDown/releases/download/v$version/FluxDown-$version-windows-arm64-portable.zip"
+            }
+        },
+        "hash": {
+            "url": "$baseurl/SHA256SUMS.txt"
+        }
+    }
+}