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Problem: Apps need a secure, organized backend to handle users, orders, products and AI features.
Solution: Built a centralized API Gateway (BFF) in n8n Cloud. One webhook handles validation, API key security and rate limiting, then routes to sub-workflows: Users (register/login), Orders (stock check, totals, status), Products (search), and AI (OpenAI chat, recommendations, review summaries). Supabase is the database.
Tools: n8n, Supabase, OpenAI API, Webhooks
Self-initiated demo project.
Nice to see a single webhook taking care of validation and rate limits before handing off to the user and order flows.
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"Businesses lose time and money to invoice errors that go unnoticed until it's too late. I built an automated pipeline that extracts invoice data, cross-checks it against vendor history, and flags anomalies with clear AI-generated reasoning — all visualized in a real-time dashboard. Stack: LangChain, Groq, n8n, FastAPI, Next.js."
Multiple Entry Points (Left): Shows user interaction coming from Web, Mobile, WhatsApp, Email, and Voice.
Cognitive Orchestration (Center Left): A deep-dive into the AI stack, breaking it down into processes like NLU, Intent Recognition, Sentiment Analysis, and Context Management.
The n8n Automation Engine (Center Right): The core control unit coordinating all actions.
Multi-Pipeline Service Mash (Right): Visualizes specific parallel automated workflows that you can build:
Support: Automatic ticket creation in Zendesk/Jira and live Escalation to Human.
Fulfillment: Connecting Shopify/Stripe with real-time Database Updates.
Enrichment: Syncing Salesforce/HubSpot data and performing API Data Logs.
Analytics and Management (Top Right): Real-time monitoring metrics like Sub-second Response Times and 75% Auto-resolution Rate.
This is a production-ready Next.js boilerplate with authentication, billing, AI integration, and an admin panel already wired together and tested end-to-end — not just scaffolded, actually working with real Stripe and Razorpay test transactions, real webhook handling, and a real Postgres database via Prisma.
The real test transactions are a useful proof point. I'd show a failed payment and its retry in the demo too, so someone can see whether account access stays in sync when billing goes wrong.