vstacks is basically a CLI tool built for coding agents and devs to cut down token waste. It scans any JS/TS repo in under a second and drops an architectural map so your AI doesn't burn context digging through files. It also spins up a Next.js + Supabase SaaS with auth, payments, credits, and AI chat already wired to work locally with zero API keys, and lets you swap providers (like Stripe to Dodo, or OpenAI to Claude) with a single command without touching your app code.