The AGORAge Toolkit is the outcome of the one-year journey conducted within the citizen science-inspired project AGORAge: Ageing in a Caring Community. It is addressed to all those who are interested in implementing initiatives to promote the creation of caring communities in which the social inclusion of older people is given special consideration. This toolkit can serve researchers and professionals dealing with social intervention as well as policymakers, service providers, and municipalities. Its two main objectives are to describe diagnostic and intervention techniques through the specific experience of the AGORAge project, and to provide further resources (good practices, toolkits, and recommendations) to foster the creation of caring communities. The usefulness and suitability of these tools will depend on each specific project, the context in which they are used, and the user, but what we believe is crucial in all cases is familiarity with the starting point, that is, understanding the needs and requirements of the people involved. This reality can only be understood by making contact with the target group from the beginning and involving its members as much as possible in each phase of the research. We invite you to browse the toolkit and explore the concepts, methods, techniques, examples, and resources to familiarise yourself with each of the tools and evaluate their applicability to your project and context.