Prime Agent is an open-source self-improving coding and research agent (harness) released by Prime Intellect on August 5, 2026. Next StepsPrime Agent is a new paradigm on the design of agent harnesses. Core New CapabilitiesPrime Agent addresses limitations of conventional agent harnesses (fixed tool schemas, static sub-agents, lossy context compaction, and non-adaptable scaffolding). Related Continual Harness paper (cited by Prime Agent): https://arxiv.org/abs/2605.09998Continual Harness: Online Adaptation for Self-Improving Foundation Agents (Karten, Zhang, et al.). Continual Harness supplies online self-modification of the scaffolding; Prime Agent operationalizes both into a practical, open coding/autonomous harness and demonstrates strong empirical results while inviting further RL co-training.