This will switch projects using Laravel Valet to only load the current project and an api if needed.

sp.py

#!/usr/local/bin/python3
import os


class ActiveSite:

    def __init__(self, dbg=False):
        self.debug = dbg
        self.apiLocation = '<oldapilocation>'
        self.newApiLocation = '<newapilocation>'

    def run_command(self, command):
        if self.debug:
            print(command)
        stream = os.popen(command)
        return stream.read()

    def unlink_existing(self):
        stream = os.popen('valet links')
        output = stream.read()
        # Remove all sites
        for line in str.splitlines(output)[3:-1]:
            print(line)
            data = line.split('|')
            if self.debug:
                print('Working on {0}'.format(data[1].strip()))
            if data[1].strip() == 'apiwps' or data[1].strip() == 'apimysql':
                continue
            outval = self.run_command('valet unlink {0}'.format(data[1].strip()))
            if self.debug:
                print(outval)

    def linkApi(self):
        command = 'valet link {0}'.format(self.apiLocation)
        self.run_command(command)
        command2 = 'valet link {0}'.format(self.newApiLocation)
        self.run_command(command2)

    def run(self):
        self.unlink_existing()
        self.linkApi()
        command = 'valet link .'
        output = self.run_command(command)
        print(self.run_command('clear'))
        print(self.run_command('valet links'))


if __name__ == "__main__":

    active = ActiveSite()
    active.run()