ManTech GST Intelligence API Documentation

Calculates exclusive or inclusive GST and splits CGST, SGST, or IGST based on state codes or explicit supply type.

curl -X POST "https://mantechstudio.in/api/v1/gst/calculate" \
  -H "Authorization: Bearer mantech_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": 10000,
    "gst_rate": 18,
    "calculation_type": "exclusive",
    "supplier_state_code": "08",
    "place_of_supply_state_code": "27"
  }'

Calculates complete invoices with line-item discounts, per-line GST rates, and HSN code validation.

{
  "supply_type": "intra_state",
  "items": [
    {
      "description": "Portland Cement OPC 53 Grade",
      "hsn_code": "25232910",
      "quantity": 100,
      "unit_price": 380,
      "discount": { "type": "percentage", "value": 5 }
    }
  ]
}