SJMap - Blueprint Builder by AI

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Programming Blueprint Builder is a complete, pre-launch AI SaaS built with Next.js 15, React 19, and TypeScript (~88,700 lines across 400+ files). It turns a natural-language project description into an editable system blueprint — a drag-and-drop React Flow canvas of typed components (frontend, backend, database, third-party APIs) — then compiles that blueprint into agent-ready execution prompts or a downloadable code scaffold for AI coding tools like Cursor, Claude Code, and Aider.What makes it more than a diagram tool:Production-grade AI pipeline — structured output validated with Zod, automatic schema repair, graph-integrity checks, multi-pass enrichment, semantic caching, and codebase-aware RAG.Monetization built in — a Stripe-powered token economy (one-off bundles + subscriptions) gates every paid AI route, backed by an append-only ledger with idempotent webhook crediting. Ready to charge from day one.Bring-Your-Own-Key (BYOK) — users add their own LLM keys (Google, OpenAI, Anthropic, Mistral, or any OpenAI-compatible endpoint) with an ordered primary→fallback chain; keys are AES-256-GCM encrypted at rest. This means you can run the product with near-zero AI costs.Tech stack: Next.js 15 (App Router), React 19, TypeScript, Tailwind v4, Prisma 6, NextAuth v5 (credentials + Google/GitHub OAuth), Stripe v17, Vercel AI SDK, Zustand, Sentry, PostHog, Vitest test suite with GitHub Actions CI. Deployable via Vercel or the included Docker setup.Why it's an easy takeover: the codebase is heavily documented and sale-prepped — it ships with a transfer guide, buyer upgrade guide, go-live checklist, security hardening report, and full project analysis. Core logic is written as pure, unit-tested modules. The remaining go-live work is infrastructure choice (SQLite → Postgres, email provider, hosting), not feature development.Ideal buyer: a developer or micro-SaaS operator who wants a finished AI product with payments and multi-provider AI already wired up — launch it as-is, rebrand it, or use it as a foundation for a dev-tools product.