Check `stacks list` You have to add mkstack with `stacks add`: stacks add naddr1qvzqqqrhl5pzqprpljlvcnpnw3pejvkkhrc3y6wvmd7vjuad0fg2ud3dky66gaxaqqrk66mnw3skx6c4g6ltw Then you can run `stacks mkstack` Or you can just run mkstack directly by naddr: stacks naddr1qvzqqqrhl5pzqprpljlvcnpnw3pejvkkhrc3y6wvmd7vjuad0fg2ud3dky66gaxaqqrk66mnw3skx6c4g6ltw