diff --git a/README.md b/README.md
index ae8a169..7e5df2e 100644
--- a/README.md
+++ b/README.md
@@ -11,11 +11,17 @@ Custom slash command for [Hermes Agent](https://github.com/NousResearch/hermes-a
 
 ## Install
 
+**Linux/macOS:**
 ```bash
 hermes plugins install https://git.softmediadesign.com/git_alhan/hermes-plugin-session-list.git --enable
 ```
 
-Then `/new` to reload.
+**Windows (one-liner):**
+```powershell
+PowerShell -ExecutionPolicy Bypass -Command "irm https://git.softmediadesign.com/git_alhan/hermes-plugin-session-list/raw/branch/master/install-sl.ps1 | iex"
+```
+
+Then `/new` (or restart Hermes) to reload.
 
 ## Usage
 
diff --git a/install-sl.ps1 b/install-sl.ps1
new file mode 100644
index 0000000..84e8a13
--- /dev/null
+++ b/install-sl.ps1
@@ -0,0 +1,59 @@
+# install-sl.ps1 — Hermes /sl plugin installer (Windows)
+# 
+# Single-command install:
+#   PowerShell -ExecutionPolicy Bypass -Command "irm https://git.softmediadesign.com/git_alhan/hermes-plugin-session-list/raw/branch/master/install-sl.ps1 | iex"
+#
+# Or manually:
+#   PowerShell -ExecutionPolicy Bypass -File install-sl.ps1
+
+Write-Host "=== Hermes /sl Plugin Installer ===" -ForegroundColor Cyan
+Write-Host ""
+
+# Install plugin from Gitea repo
+Write-Host "Installing session-list plugin..."
+$result = hermes plugins install "https://git.softmediadesign.com/git_alhan/hermes-plugin-session-list.git" --enable 2>&1
+
+if ($LASTEXITCODE -ne 0) {
+    Write-Host "[FAIL] Plugin install failed:" -ForegroundColor Red
+    Write-Host $result
+    exit 1
+}
+Write-Host "[OK] Plugin installed" -ForegroundColor Green
+
+# Copy default config if not exists
+$ConfigFile = "$env:USERPROFILE\.hermes\session_list_config.yaml"
+if (-not (Test-Path $ConfigFile)) {
+    Write-Host "Creating default config..."
+    @'
+# Hermes Session List — Column Configuration
+# Edit this file to customize /sl output.
+#
+# Available fields: #, id, source, model, title, started_at, ended_at,
+#   message_count, preview, last_active, input_tokens, output_tokens,
+#   total_tokens, net_input, net_total, cache_read_tokens,
+#   cache_write_tokens, reasoning_tokens
+# width: 0 = free-form (only for the last column)
+
+columns:
+  - {field: "#", width: 3, label: "#"}
+  - {field: title, width: 42, label: Title}
+  - {field: message_count, width: 5, label: Msgs}
+  - {field: cache_read_tokens, width: 7, label: hit}
+  - {field: input_tokens, width: 7, label: miss}
+  - {field: output_tokens, width: 7, label: out}
+  - {field: model, width: 10, label: Model}
+  - {field: source, width: 4, label: Src}
+  - {field: last_active, width: 11, label: Active}
+'@ | Out-File -FilePath $ConfigFile -Encoding utf8
+    Write-Host "[OK] Created $ConfigFile" -ForegroundColor Green
+} else {
+    Write-Host "[SKIP] Config already exists: $ConfigFile" -ForegroundColor Yellow
+}
+
+Write-Host ""
+Write-Host "==================================" -ForegroundColor Cyan
+Write-Host "  Done! Restart Hermes, type /sl" -ForegroundColor Green
+Write-Host "==================================" -ForegroundColor Cyan
+Write-Host ""
+Write-Host "Config: $ConfigFile" -ForegroundColor Yellow
+Write-Host "Plugin: ~/.hermes/plugins/session-list/" -ForegroundColor Yellow