Booster Robotics SDK is an open-source developer toolkit for controlling Booster Robotics T1 and K1 humanoid robots. It provides both C++ (CMake) and Python (pip) APIs, supporting Ubuntu 22.04 LTS on aarch64 and x86_64 architectures. Internally it relies on eProsima Fast DDS (Apache 2.0) and pybind11. Available on GitHub under the Apache 2.0 license.