In a small saucepan over low heat, combine agave, crushed red pepper flake and a pinch off salt.
stirring frequently, bring the mixture just to a simmer, then remove from heat. Allow mixture to cool in the saucepan for 1 hour to allow the red pepper flake to steep.
Add the lemon juice and stir to combine.
Transfer to a jar and store in the refrigerator for up to 1 month.