<p>In the context of an agricultural product live streaming e-commerce (LSEC) supply chain consisting of an LSEC platform and a cooperative supplier (an alliance integrating a farmer with a third-party logistics (TPL) provider), this study examines low-carbon efforts across three key dimensions: freshness efforts, carbon emission reduction (CER) levels, and streamer efforts. Both centralized and decentralized decision models for the LSEC supply chain are developed and analyzed. A coordination mechanism based on a wholesale price + revenue-sharing contract is then proposed. The changes in supply chain decisions before and after coordination are compared, and the results are validated through a numerical example. The study indicates that rising carbon prices contribute to improved environmental performance, though they may also lead to a decline in market demand. In contrast, such low-carbon initiatives can stimulate market demand. Decentralized decision-making reduces the profitability of the agricultural LSEC supply chain. However, when the parameters of the contract are set appropriately, the wholesale price and revenue-sharing contract can effectively achieve optimal coordination within the supply chain. These findings provide valuable insights for implementing low-carbon strategies in agricultural product supply chains operating in LSEC environments.</p>