Seed and stem the cherries and cut them up. Split the vanilla bean and scrape out the seeds. Put the pod in sugar to give it a vanilla flavor or use it some other way. Place the vanilla seeds and cherries in a large pitcher. Muddle them with agave. Then add the rest of the ingredients and fill with ice. Mix well.
Dip glasses in water. Then salt the rims with a mixture of sea salt and large grain sugar. Fill each glass and garnish with limes and cherries.