fission-ai/openspec

OpenSpec is a spec-driven development framework for AI coding assistants that helps teams align on requirements before building. It provides a structured workflow where users create proposals, specs, designs, and tasks for each change, then use slash commands to guide AI implementation through a predictable, iterative process. The tool works with 20+ AI assistants and is designed for developers who want to maintain organization and predictability when using AI for coding while keeping the process fluid and easy to adopt.