Feagine A03 is a six-degree-of-freedom, tendon-driven continuum robotic arm developed for mobile manipulation, confined-space operation, and embodied AI research. Its 78 cm body comprises three serial flexible segments, each capable of up to 135° omnidirectional bending, allowing the arm to reshape around obstacles rather than move through a fixed chain of rigid joints. Proximally mounted actuators reduce distal mass and inertia, while embedded sensing and closed-loop control estimate body deformation and coordinate tendon tension under elasticity, friction, payload variation, and contact. Weighing approximately 2.3 kg, A03 reaches end-effector speeds up to 1.17 m/s and integrates a three-finger gripper for object interaction. ROS 1/ROS 2 interfaces, graphical control software, SDK access, and simulation assets support integration with mobile bases, quadrupeds, drones, and custom platforms. Applications include factory assistance, inspection, human–robot collaboration research, and cross-embodiment learning.