Pour a thin layer of salt onto a small plate. Rub a cut lime wedge around the top edge of each glass, then gently press the glass into the salt so that it sticks. (I love to rub the lime only 1/2-3/4 of the way around, so you can control how much salt you get with each sip!) Fill glasses with ice and set aside.

Fill a small cocktail shaker with additional ice. Add the tequila, lime juice, orange juice, and agave. Tightly close and shake vigorously for at least 30 seconds. Strain over ice into the rimmed glasses. Enjoy!