diff --git a/scripts/install.ps1 b/scripts/install.ps1
index e69de29..b0edc44 100644
--- a/scripts/install.ps1
+++ b/scripts/install.ps1
@@ -0,0 +1,94 @@
+[CmdletBinding()]
+param(
+    [string]$GiteaUrl = $(if ($env:HOP_GITEA_URL) { $env:HOP_GITEA_URL } else { "https://githop.xyz" }),
+    [string]$Repository = $(if ($env:HOP_REPOSITORY) { $env:HOP_REPOSITORY } else { "GnosysLabs/Hop" }),
+    [string]$Version = $(if ($env:HOP_VERSION) { $env:HOP_VERSION } else { "latest" }),
+    [string]$InstallDir = $(if ($env:HOP_INSTALL_DIR) { $env:HOP_INSTALL_DIR } else { Join-Path $env:LOCALAPPDATA "Programs\Hop" }),
+    [switch]$SkipSkill,
+    [switch]$SkipPath
+)
+
+$ErrorActionPreference = "Stop"
+$GiteaUrl = $GiteaUrl.TrimEnd("/")
+
+switch ([System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture.ToString()) {
+    "X64" { $arch = "amd64" }
+    "Arm64" { $arch = "arm64" }
+    default { throw "Unsupported Windows architecture: $($_)" }
+}
+
+$asset = "hop_windows_${arch}.zip"
+if ($Version -eq "latest") {
+    # Gitea's /releases/latest endpoint omits prereleases. Select the newest
+    # published release so the normal installer also works during Hop's alpha.
+    $releaseResponse = Invoke-WebRequest -UseBasicParsing -Uri "$GiteaUrl/api/v1/repos/$Repository/releases?draft=false&page=1&limit=1"
+    if (-not $releaseResponse -or [string]::IsNullOrWhiteSpace($releaseResponse.Content)) {
+        throw "Could not determine the latest published release"
+    }
+    $releases = @($releaseResponse.Content | ConvertFrom-Json)
+    $latestRelease = @($releases | Where-Object { $_ -and $_.tag_name } | Select-Object -First 1)[0]
+    if ($null -eq $latestRelease) { throw "Could not determine the latest published release" }
+    $tag = [string]$latestRelease.tag_name
+    if ([string]::IsNullOrWhiteSpace($tag)) { throw "Could not determine the latest published release" }
+} else {
+    $tag = if ($Version.StartsWith("v")) { $Version } else { "v$Version" }
+}
+if ($tag -notmatch '^[A-Za-z0-9._-]+$') {
+    throw "Release API returned an unsafe tag: $tag"
+}
+$releaseUrl = "$GiteaUrl/$Repository/releases/download/$tag"
+
+$tempDir = Join-Path ([System.IO.Path]::GetTempPath()) ("hop-install-" + [guid]::NewGuid())
+New-Item -ItemType Directory -Path $tempDir | Out-Null
+try {
+    $archivePath = Join-Path $tempDir $asset
+    $checksumsPath = Join-Path $tempDir "checksums.txt"
+    Write-Host "Downloading $asset..."
+    Invoke-WebRequest -UseBasicParsing -Uri "$releaseUrl/$asset" -OutFile $archivePath
+    Invoke-WebRequest -UseBasicParsing -Uri "$releaseUrl/checksums.txt" -OutFile $checksumsPath
+
+    $escapedAsset = [regex]::Escape($asset)
+    $checksumLine = Get-Content $checksumsPath | Where-Object { $_ -match "^([a-fA-F0-9]{64})\s+\*?$escapedAsset$" } | Select-Object -First 1
+    if (-not $checksumLine) { throw "checksums.txt does not contain $asset" }
+    $expected = ([regex]::Match($checksumLine, "^[a-fA-F0-9]{64}")).Value.ToLowerInvariant()
+    $actual = (Get-FileHash -Algorithm SHA256 $archivePath).Hash.ToLowerInvariant()
+    if ($actual -ne $expected) { throw "Checksum verification failed for $asset" }
+
+    $extractPath = Join-Path $tempDir "archive"
+    Expand-Archive -Path $archivePath -DestinationPath $extractPath
+    $binary = Join-Path $extractPath "hop.exe"
+    if (-not (Test-Path $binary)) { throw "Release archive does not contain hop.exe" }
+
+    New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
+    $installedBinary = Join-Path $InstallDir "hop.exe"
+    Copy-Item -Force $binary $installedBinary
+
+    if (-not $SkipPath) {
+        $userPath = [Environment]::GetEnvironmentVariable("Path", "User")
+        $pathEntries = @($userPath -split ";" | Where-Object { $_ })
+        if ($pathEntries -notcontains $InstallDir) {
+            $newUserPath = (($pathEntries + $InstallDir) -join ";")
+            [Environment]::SetEnvironmentVariable("Path", $newUserPath, "User")
+            Write-Host "Added $InstallDir to your user PATH."
+        }
+        if (($env:Path -split ";") -notcontains $InstallDir) {
+            $env:Path = "$InstallDir;$env:Path"
+        }
+    }
+
+    if (-not $SkipSkill) {
+        & $installedBinary skill install --force
+        if ($LASTEXITCODE -ne 0) {
+            throw "Hop skill installation failed with exit code $LASTEXITCODE"
+        }
+    }
+    Write-Host "Installed $(& $installedBinary version)"
+    Write-Host "Binary: $installedBinary"
+    if (-not $SkipSkill) {
+        Write-Host "Restart any open agent application, then use it normally in any Git repository."
+    }
+} finally {
+    Remove-Item -Recurse -Force -ErrorAction SilentlyContinue $tempDir
+}
+
+