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GST Billing Agent

Generates GSTN-compliant invoices with IRN, auto-sends to customer, exports GSTR-1.

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What This Agent Does

How it works.

This agent handles the complete GST billing lifecycle — from invoice generation with correct HSN/SAC codes and IGST/CGST splits, to IRN-based e-invoice generation via the GST portal API, PDF delivery to customer WhatsApp and email, and monthly GSTR-1 export.

Inputs

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Customer GSTIN & state
Determines IGST vs CGST/SGST split automatically
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Line items with HSN codes
Products or services with quantity, rate and GST rate
→
Invoice date & series
Financial year series maintained automatically
→
Payment status
Used to generate paid receipt vs outstanding invoice

Outputs

GST invoice PDF
Branded, compliant — emailed and WhatsApped to customer
e-Invoice IRN
Generated via NIC portal API — QR code embedded in PDF
Payment link
Razorpay link attached if invoice is unpaid
GSTR-1 line item
Added to monthly GSTR-1 export automatically
Audit log entry
Invoice number, amount, GST breakup stored in portal

Automation Flow

Sale completed
Order or service marked done in portal
Invoice generated
HSN codes mapped, tax split calculated automatically
e-Invoice IRN
Submitted to NIC API, IRN received and embedded
PDF created
Branded PDF with QR code, IRN, all GST details
WhatsApp delivery
PDF sent to customer WhatsApp instantly
Payment link
Razorpay link included if unpaid balance
GSTR-1 update
Line item added to monthly export queue
Tech Stack
NIC GST APIRazorpayWhatsApp Business APImPDFMySQL
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