Anthropic Designs Three-Agent Harness for Long-Running Full-Stack AI Development

Summary

Anthropic has introduced a three-agent harness architecture designed to support long-running, full-stack AI development workflows. The system appears to coordinate multiple specialized agents that can collaborate on complex software engineering tasks over extended periods, moving beyond single-prompt interactions toward sustained, multi-step development processes. This architecture represents a significant evolution in agentic coding patterns, where distinct agents handle different aspects of t