The Miami Office of Sustainable Initiatives (MSI) is the designated office responsible for addressing the City's environmental programs by coordinating with other City Departments and environmental experts to assure that the City of Miami becomes a model for environmental best practices.

MSI also manages the City's compliance to the U.S. Mayors Climate Protection Agreement — an agreement entered into by the City of Miami, along with many other cities across the United States in 2006, endorsing the Kyoto Protocol and its mandates.