The European funded research project CAPSELLA has developed a pilot application that uses open data-driven services to enhance transparency and inform decision making in food supply chain management, public procurement and consumption of meals served at public schools. The application acquires nutritional, health and social data by users and exploits other data available in open databases. Aggregated data form a geolocated interface informing parents, city officers, canteen operators and public food procurement officers about the nutritional background and habits of school children across the city. The pilot is implemented in the cities of Milan and Asti, Italy. The Public Food sector can drive urban sustainability strategies, having the potential to influence the traded volumes and overall quality in the food system and the food chain. Developing data driven ICT tools by integrating health, nutritional, environmental (i.e. food miles, carbon, water) and consumer data can support sustainability goals and the process of food production, delivery and consumption.