tl;dr
GitHub Spec Kit is a lightweight toolkit and workflow designed to make Spec‑Driven Development (SDD) practical.

Specify (Spec Kit) scaffolds a spec‑first process, provides templates and editor/agent slash‑commands, and produces a set of structured artifacts (constitution.md, spec.md, plan.md, tasks.md) that become the single source of truth for design, implementation, and verification. By converting human intent into predictable, machine‑readable inputs, Specify helps teams align produc...