Download LASDK

Your download is ready

Pick your platform. Most Macs from 2020 on are Apple Silicon; on Windows, WSL uses the Linux build.

macOS: first run — the binaries are not yet code-signed, so macOS quarantines anything downloaded through a browser and will say it “cannot be opened because the developer cannot be verified”. That is the quarantine flag, not a problem with the file. Clear it once:
xattr -d com.apple.quarantine ~/.lasdk/lasdk
Then lasdk doctor should run normally.

Windows: first run — SmartScreen may show “Windows protected your PC” for the same reason. Choose More info → Run anyway. Both warnings are about the absence of a code-signing certificate, not about the file. Signing is on the roadmap and this note goes away when it lands.

Both macOS builds are downloaded from this page, checked byte-for-byte against the build output, installed and run end-to-end before every release. The Linux and Windows builds are compiled from the same source and pass their packaging checks, but they are cross-compiled on a Mac and have not been executed on their own platform — so treat them as unproven until we say otherwise. If one fails to start, tell us: we will fix it, and no trial time or subscription day is lost to it.

Then install it — macOS, Linux or WSL:

mkdir -p lasdk && tar xzf ~/Downloads/lasdk-*.tar.gz -C lasdk
cd lasdk && ./install.sh
lasdk doctor

Windows (PowerShell) — or use WSL with the Linux build above:

mkdir "$HOME\lasdk" -Force; tar -xzf "$HOME\Downloads\lasdk-*-windows-x64.tar.gz" -C "$HOME\lasdk"
cd "$HOME\lasdk"; .\install.ps1
lasdk doctor

Two more, worth the ten seconds — Claude Code users:

lasdk hooks install --user   # refuse writes to .env, keys and certs before they happen
lasdk certify                # run this project's tests, leave a record someone else can check