Now available: Orchestrate Claude Code, Codex, and Warp Agent in Oz Learn More

Rectangle Health, a healthcare payment technology company, built a custom AI agent named Rex to address fragmented AI tooling and reduce technical debt. Using Warp's Oz cloud orchestration platform, Rex automates the software development workflow by taking tickets and creating pull requests. The agentic system has a self-improvement loop, has written over half of its own code, and now contributes thousands of lines of code to production weekly. What began as a side project has scaled to company-wide infrastructure, demonstrating a successful application of AI agents to increase developer velocity.