To Make The Margarita:

1. Add tequila, lime juice, agave, orange juice, and cucumber to a blender.  Pulse for 1 minute, or until the mixture is smooth.  Strain out the liquid into a cocktail shaker.  Add the jalapeno slices, and muddle until the margarita has your desired level of heat.  (Note that the longer the jalapenos sit in the mixture, the more they will release their flavor, so heads up!)  Add a handful of ice, and shake the mixture vigorously for a few seconds so that it is chilled.  Then immediately strain it into serving glasses that have been rimmed with salt (see below), filled with ice, and topped with optional garnishes.

To Make The Sweet Chili Rim Salt:

1. Whisk all ingredients together in a small bowl until combined.  Run a lime wedge around the edge of your serving glass, then dip it into the salt until the rim is coated.  Repeat with remaining glasses.