Open Auto Builder
Blog post from Replay
Open Auto Builder is a newly released open-source tool designed to autonomously build, test, and maintain web applications through a structured, task-oriented approach. Within a container, an agent executes tasks based on skill files that guide the breakdown and execution of app development processes. During the initial build, the agent creates a test specification, builds the app, writes and runs tests, and deploys the app to production, followed by further testing. Although initial builds may not be flawless, the agent can conduct maintenance passes to address any discrepancies and update skills to prevent future issues. The agent uses the Replay browser and Replay MCP to diagnose and fix test failures, ensuring adherence to the initial specifications and skill directives. Additionally, the Loop Builder is introduced to iterate app builds continuously, which helps improve the tool's capabilities and maintain high-quality outcomes.