Grease 9x13 pan. Combine agave, cocoa, peanut butter, and coconut oil in pan and melt over low heat mixing until combined and smooth. Stir in Rice Crispy cereal until fully coated. Pour into greased 9x13 pan and use back of spoon to pat down evenly throughout pan. Refrigerate for approx. 1-2 hours or until formed. Cut into squares.