Soulgraph is developing open-source tools and offering infrastructure designed for developers to equip their agents with dynamic and evolving personalities, persistent memory bound to users, and real-time voice communication capabilities. Serving as a common foundation, Soulgraph can be utilized by agents operating on platforms such as ElizaOS, Zerepy, Arc, and any forthcoming agentic frameworks. This framework transforms agents into engaging characters that users will want to engage with repeatedly.