Article L5211-4-2 of the French General Code of Local Authorities
In addition to the powers transferred, a public establishment for inter-municipal cooperation with its own tax status, one or more of its member municipalities and, where applicable, one or more of the public establishments attached to one or more of them, may set up joint services, responsible for carrying out functional or operational tasks, including the examination of decisions taken by mayors on behalf of the municipality or the State,…