# Installing vetto in two minutes
Target length: 2 minutes.
1. Show the supported-platform table and explain FULL versus FS-ONLY in one
sentence.
2. Install the cross-platform package with
`npm install --global @shledery/vetto`. To pin this release, use
`npm install --global @shledery/vetto@0.2.1`. The package contains native
executables for Linux x64/ARM64, macOS x64/Apple Silicon, and Windows x64;
it does not download a binary during installation. npm is the only supported
installation channel for users.
3. Run `vetto doctor` and read the selected tier aloud.
4. In a temporary project, run `vetto -- sh -c 'printf "sandbox works\n"'`.
5. Close with the fail-closed rule: an unavailable backend stops the command;
vetto never silently runs it unsandboxed.