Relation Protocol stands as a novel decentralized social graph protocol, strategically establishing a middle layer on-chain that stimulates the construction of social relationships and reputations in Decentralized Social (DeSoc) platforms with the help of RDF-embedded Soulbound Tokens. With Relation, social media platforms, communities, and Decentralized Autonomous Organizations (DAOs) can interact, exchange, and share social metadata in a bottom-up, self-sovereign, configurable-private, community-owned manner – at a scalable level. Moreover, the inclusion of semantics greatly simplifies data sharing while facilitating machine interpretation and Artificial Intelligence (AI) systems to derive insights from DeSoc for the development of AI-driven web.Relation token is at the heart of the Relation Labs ecosystem, functioning as a governance token, incentivizing user engagement, and acting as the primary payment token.