Agency Secret Stack
The ₹0/month Stack
Professional Agencies Actually Use
5 tools. Zero monthly cost. Used by automation agencies charging ₹10,000–₹50,000 per client — and most beginners have no idea this exists.
Complete Flow
Client's App/Website
→
n8n (Oracle Cloud)
→
Supabase DB
→
OpenAI API
→
WhatsApp / Email / Sheets
Total: ₹0/month
The 5 Core Tools
n8n (Self-Hosted)
Automation Brain
The heart of everything. Connects all your tools, runs workflows, handles logic. Self-hosted means unlimited workflows, unlimited executions — forever. Agencies pay ₹0 vs ₹8,000+/month on Zapier for the same work.
Unlimited workflows
500+ integrations
Visual builder
₹0
forever
Oracle Cloud Free Tier
Server (Hosts n8n)
Not a trial. Not 12 months free. Genuinely free forever. Oracle gives you an ARM server with 4 CPUs + 24GB RAM — powerful enough to run n8n for 10–15 clients simultaneously. This is the secret most beginners don't know.
4 CPU cores
24GB RAM
Always free
No credit card needed
₹0
forever
Supabase
Database + Auth + Storage
Your backend. Stores all client data, chat histories, leads, form submissions. Free tier gives you 500MB database — enough for 5–8 active clients. Also handles user authentication if your client needs a login system.
500MB free DB
REST API auto-generated
Real-time updates
₹0
free tier
OpenAI API
AI Intelligence Layer
GPT-4o-mini is the sweet spot — smarter than enough, costs almost nothing. For a lead qualification bot handling 100 leads/day, you spend roughly ₹50–₹150/month. Bill the client ₹5,000/month. That's your margin.
Pay per use
GPT-4o-mini recommended
$8 credit = months of use
~₹0
you have $8
Cloudflare Tunnel
Secure Public URL
Gives your n8n a real public HTTPS URL. Webhooks from WhatsApp, payment gateways, forms — all reach your server securely. Replaces Ngrok permanently. Free forever. This is what makes the whole setup production-ready.
Free HTTPS URL
No port forwarding
Production ready
₹0
forever
How It All Connects
Client submits a lead / sends WhatsApp message
Form on website, WhatsApp, Instagram DM, email — all trigger a webhook to your n8n
Cloudflare Tunnel receives it → routes to n8n on Oracle Cloud
Your public URL (yourapp.yourdomain.com) securely forwards to your server running 24/7
n8n workflow kicks in — calls OpenAI for intelligence
GPT-4o-mini qualifies the lead, generates reply, extracts intent, scores the conversation
Data saved to Supabase — client sees it in real time
Every lead, chat, score, timestamp stored. Client gets a dashboard or Google Sheet auto-updated
Automated response sent — WhatsApp, Email, Slack, wherever
Lead gets instant reply. Client gets notification. You get paid ₹5,000–₹20,000/month to maintain it
What You Can Sell With This Stack
AI Chatbot
₹8,000–₹15,000 setup + ₹3,000/month
n8n + OpenAI + WhatsApp Business API + Supabase
Lead Qualification Bot
₹10,000–₹20,000 setup + ₹5,000/month
n8n + OpenAI + Google Sheets + Email/WhatsApp
Review Automation
₹5,000–₹10,000 setup + ₹2,000/month
n8n + OpenAI + Google My Business API + Email
Social Media Automation
₹8,000–₹15,000 setup + ₹4,000/month
n8n + OpenAI + Instagram/Facebook API + Supabase
Your Infrastructure Cost This Month
While agencies on Zapier + Airtable + Make Pro pay ₹15,000–₹25,000/month in tool costs,
you run the exact same services for nothing.
Total Monthly Infrastructure Cost
₹0 / month