The openCode Badge Programme promotes quality, security, and reusability of open source software in public administration. Part of the openCode platform run by the German Centre for Digital Sovereignty (ZenDiS), it automatically evaluates repositories against defined criteria and awards badges in areas such as security and maintenance, which are visible in the openCode catalogue. The Badge Programme is an integral part of ZenDiS and the German Federal Office for Information Security’s (BSI) strategy to strengthen the security of software supply chains in public administration. By creating clear incentives to meet standards and supporting informed decisions when reusing software, the programme shows how open source development and use can be fostered in the public sector.