Yearn-Subgraph, powered by the Graph protocol, optimizes the retrieval of essential data from Yearn smart contracts. By efficiently storing and aggregating user data, it presents historical returns in a comprehensive manner. With Yearn Subgraph, developers gain effortless access to critical metrics like vault performance and user balances, facilitating seamless analysis. Integration of Yearn-Subgraph into dapps is made simple through the utilization of the GraphQL API endpoint available on Graph Explorer.