OAuth is much better and safer than basic auth and these days it's not much more work to authenticate with now-sdk. The OAuth app registry comes on every instance and is ready for you to use.
Run this command and specify the alias to name the credential:
now-sdk auth --add https://{instance}.service-now.com --alias {myinstance}
Select "Oauth" and follow the instructions and you're ready to go! It will bring up a browser, allow you to login, request permissions and then instruct you to paste a token back to the terminal.
That credential is now ready to be used with the sdk for development!
You can specify the alias to use with the -a flag, or select it as default.
now-sdk install -a myinstance
Find more help and instructions: https://servicenow.github.io/sdk/cli#auth
