Indian Developer Micro-SaaS & Automation Starter: Razorpay UPI, Auto-Invoicing & CRM Sync

Stop spending 4 days configuring Indian payment gateways, webhook verifications, and custom invoicing every time you build a new tool or client portal.

The Indian Micro-SaaS & Automation Starter is a production-ready, modular boilerplate designed to launch paid tools, digital downloads, and client services in minutes with native UPI/Card payments and automated back-office workflows.

What's Included in the Architecture:

• FastAPI Payment Backend: Ready-to-use endpoints (/api/create-order, /api/verify-payment, /api/health) with HMAC-SHA256 signature verification for Razorpay and Cashfree.
• Automated PDF Invoice Generator: Generates professional, compliant invoices with INR currency formatting, dynamic invoice serials, and tax breakdown.
• Modern Dark-Mode Checkout Frontend: Single-page checkout interface styled with Tailwind CSS, pre-wired to trigger native UPI/Card flows.
• 3 Plug-and-Play Python Automations:
  • auto_invoice_mailer.py: Automatically dispatches invoice PDFs to buyers via SMTP/Gmail upon successful payment.
  • daily_revenue_digest.py: Summarizes gross revenue, payment gateway cuts, and net profit directly in your terminal.
  • notion_crm_sync.py: Syncs customer details and transaction IDs directly into a Notion or Airtable CRM table.
• Quickstart Documentation & Config: Detailed README.md with a 5-minute setup guide and clean .env.example configuration.

Tech Stack:

• Backend: Python (FastAPI, Uvicorn, Pydantic, Jinja2)
• Frontend: HTML5, Tailwind CSS, Native Gateway JS SDK
• Scripts: Python CLI automation utilities

Usage License: Commercial use included. Use it as the foundation for unlimited personal projects, commercial SaaS tools, or client deliverables.

Instant .zip source code download via UPI below.