Specification-Driven Development framework that enables humans and AI agents to build better software by giving them small, local instructions right where the code lives. It increases productivity, reduces implementation errors, and helps keep changes aligned with the project’s intended design.

A small todo app demonstrating how SpecDD works in practice. It shows how colocated .sdd specs guide AI agents to implement code in small, well-defined steps while reducing errors and keeping changes aligned with the intended design.

SpecDD CLI is a tool for working with SpecDD framework-enabled projects.

SpecDD plugin for Antigravity: reusable skills for working under .sdd contracts and active SpecDD project bootstraps.

SpecDD skills for Claude Code, adding specification-aware workflows for planning, implementation, review, testing, debugging, tracing, and documentation.

SpecDD skills for Junie: reusable agent workflows for reading .sdd contracts and working under active SpecDD project authority.

IntelliJ support for SpecDD specification files

SpecDD skills for Codex, adding specification-aware workflows for planning, implementation, review, testing, debugging, tracing, and documentation.

SpecDD skills for Cline: on-demand workflows for implementing, reviewing, testing, documenting, and tracing changes in SpecDD projects.

Source templates and release tooling for SpecDD agent plugins, building shared SpecDD skills into Codex and Claude Code plugin repositories.

Homebrew tap for installing the SpecDD CLI.

Generate production-grade technical specifications from feature requests using AI coding agents.