In a medium pitcher, combine freshly squeezed orange juice, tangy lime juice, and a drizzle of agave syrup. Stir the mixture well for about 30 seconds until the agave fully dissolves.

Gently pour in chilled sparkling water to the pitcher, aiming to maintain its effervescence. Use a spoon to softly stir the combination.

While the mixture rests, fill the glassware with ice cubes to chill.

If desired, rim the glasses by running a lime wedge around the edge and dipping into salt.

Pour the orange juice and sparkling water mixture into the prepared glasses filled with ice.

Garnish each glass with a slice of lime and serve immediately.