The objectives of the FooSIN project are to establish and work within the recently proposed and endorsed GO FAIR Food Systems Implementation Network (IN) to 1) accelerate the implementation of FAIR principles in the agri-food community, and 2) position France as a leader in this evolution and make French actions and productions more visible at an international level. The Food Systems IN, co-led by Inra and Wageningen University and Research, gathers 22 major actors of the agriculture and nutrition domains worldwide, who commit to FAIR principles and collectively work for their wider and quicker adoption. As members of the Food Systems IN, we propose concrete actions towards the French community of people involved in data production and management for agriculture and food. We will organize a Bring-Your-Own-Data workshop (a.k.a datathon), seek for adapted training materials, and recommend tools and methodologies to FAIRify data and semantic resources, with the aim to leverage the FAIR awareness and skills, and the adoption of efficient tooling by our community. We will also propose original tools and services for data FAIRification to be adopted and disseminated by the Food Systems IN at the international level. These services and tools may also be transfered to other fields among the INs of the GO FAIR network.