OpenSpec – A lightweight and configurable AI spec framework

OpenSpec is a lightweight, open-source framework that helps developers create and manage software specifications while keeping teams and AI coding agents aligned throughout development. With 68,000 GitHub stars and over 265,000 monthly users, OpenSpec enables developers to capture requirements, validate them, and verify implementations match specifications—accomplishing a new spec creation every two seconds. The framework integrates with dozens of AI tools and IDEs, offering a workflow for exploring problems, proposing solutions, implementing tasks, and verifying code against specifications.