OpenSpec
OpenSpec is a spec-driven development framework for AI coding assistants: it captures requirements and scenarios as plain Markdown specs that an agent turns into a reviewable plan before writing code.
A user's AI agent is invoked with commands such as one that proposes a change or one that first explores options with no commitment yet, producing specs written as plain Markdown requirements with concrete scenarios rather than a special syntax, stored in a specs folder alongside in-flight changes. A human reviews the plan before any code is written.
A newer, beta "Stores" feature lets a team keep planning specs in a repository of their own, shared by an ordinary git push, so a feature spanning several codebases, or requirements owned by one team and read by others, has one shared source of truth reachable by every coding agent involved.
Installs as a global CLI; requires Node.js 20.19 or newer. TypeScript, MIT licensed.