# Foundry Kit > AI-powered MVP development for founders. Built on the same stack as GitHub, Shopify, and Airbnb. ## What is Foundry Kit? Foundry Kit is a production-grade Ruby on Rails engine designed to help founders launch B2B SaaS products in weeks instead of months. It provides the same foundation used by companies like GitHub, Shopify, Airbnb, and Basecamp. ## Key Features - **Authentication & 2FA**: Devise auth, TOTP two-factor, encrypted backup codes, session management - **Multi-tenant workspaces**: Isolated team environments with admin/member roles via Pundit - **Stripe billing**: Full subscription lifecycle with metered usage, webhooks, and reconciliation - **AI chat with Claude**: Multi-turn streaming, tool calls, extended thinking, token tracking - **AI agents and tools**: RAG pipelines, reasoning agents, tool calls, and usage-based billing - **UI component library**: 17 ViewComponents, 29 Stimulus controllers, React chat UI - **Admin panel**: 16 pages covering users, subscriptions, feature flags, and job monitoring - **Full-text search**: PostgreSQL tsvector with Cmd+K command palette - **Audit trail**: Polymorphic event logging, SOC 2 query-ready - **Real-time**: AnyCable WebSocket with 14 background jobs via Good Job - **Security**: CSP headers, rate limiting, encrypted secrets, Brakeman scanning - **MCP server**: Built-in Model Context Protocol server support ## Tech Stack - Ruby on Rails 8.1 - PostgreSQL - Tailwind CSS v4 - React 19 (chat UI) - Vite 8 - AnyCable (WebSocket) - Good Job (background processing) - Docker/Kamal (deployment) ## How It Works 1. **Book a call**: Tell us what you're building. We scope the MVP together. 2. **We build it together**: The founder of Foundry Kit works alongside you with weekly demos. 3. **We deploy, you launch**: Full deployment, monitoring, and scaling handled for you. ## Use Cases Foundry Kit can be used to build: - AI-powered SaaS products (chat, agents, RAG, usage tracking) - B2B marketplaces with multi-tenant workspaces - Fintech platforms with audit trails and compliance - Client portals with branded dashboards - Internal tools and admin panels - AI content platforms with RAG pipelines - E-commerce tools with Stripe billing - Developer tools with MCP server support - Healthcare and wellness platforms - EdTech and learning management systems - Project management tools - Analytics dashboards ## Who Is This For? Founders who have validated their business idea and need a production-grade product, not a prototype. Especially founders who have tried vibe coding tools (Replit, Lovable) and hit architectural limits. ## About the Founder Adrian Teh is an exited founder, technical product leader, and full-stack Rails engineer. He co-founded a PropTech SaaS platform used by 2M+ households across North America before it was acquired. He has built M&A marketplaces, fintech APIs, e-commerce platforms, and AI-powered products. ## Pricing A fixed flat fee to kick-start your MVP on Foundry Kit, plus an hourly rate for custom features built on top. Equity arrangements are available for the right product. ## Contact Book a free call at https://kit.withfoundry.dev ## Links - Website: https://kit.withfoundry.dev - About: https://kit.withfoundry.dev/about - Use Cases: https://kit.withfoundry.dev/use-cases - Terms: https://kit.withfoundry.dev/terms - Privacy: https://kit.withfoundry.dev/privacy - Sitemap: https://kit.withfoundry.dev/sitemap.xml