UniSat, a Bitcoin ecosystem service provider, has launched a new low-fee transaction mode for its developer API service, allowing transactions at rates below 1 sat/vB. This feature aims to optimize transaction costs for Bitcoin and Fractal networks, enabling developers to broadcast transactions, query UTXOs, and perform inscription operations efficiently. The API can handle up to 500 low-fee UTXO records per request, offering significant cost control solutions. Additionally, UniSat has introduced a one-month fee discount plan, providing developers with up to 60% annual API service discounts. This offer is available until December 23, 16:00 Beijing time. With over three years of operation, UniSat's API service processes more than 11 billion requests and offers various service packages tailored to professional and enterprise needs.