兴趣爱好Vyapar GST Billing Data API: GSTIN Verification, IRN E-Invoices and Payment Links via Open Data
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From GSTIN lookup to e-way bills and UAE FTA invoices, here is how Vyapar's billing data can be integrated into your own systems.
INTRODUCTION
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India's small-business billing market is crowded: myBillBook, Khatabook and TallyPrime all compete for MSMEs that must issue GST-compliant invoices every day. The data in these apps (verified parties, IRN-stamped invoices, outstanding balances) is what ERP, compliance and finance teams actually need. It usually sits inside the app screens, though, with no clean interface.
This article covers a Vyapar GST data API for developers and finance teams in India and the UAE who want that billing data as open data.
FEATURED APP: VYAPAR INVOICE GST BILLING APP
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Vyapar is an Android billing, inventory and bookkeeping app from Bengaluru-based Simply Vyapar Apps. It is listed in the Business category and built for small businesses on GST, from retailers to wholesalers and distributors. It also serves the UAE, where businesses sign in with their EmaraTax TIN and an OTP.
The openData Studio page documents 18 endpoints for the app, including:
Session sign-in
GSTIN lookup
E-invoice portal login and IRN registration
E-way bill generation
UAE FTA e-invoice login and PDF download
Payment links
Party ledgers
Reminders
FX rates
WHAT CAN BE INTEGRATED
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GSTIN registry: legalName, tradeName, panNo, gstInType and an isValidGstIn flag
E-invoices: irn, ackNo, ackDt and the signed QR for each registered sale
E-way bills: ewbNo, tying consignor and consignee GSTINs and legal names
Payment accounts and links: settlement bank details, paymentLink and a UPI QR
Party ledgers and reminders: hosted statement shareUrl, SMS reminders with partyCurrentBalance, WhatsApp sale notices
UAE and multi-currency: EmaraTax tin, orgId and partyName, FTA invoice PDFs, and conversionRates with lastUpdatedAt
USE CASES
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[1] GSTIN-verified party onboarding
Verify a typed GSTIN and store the legal name, PAN and taxpayer type on the party
Send an invite so the customer confirms billing and shipping addresses before the first tax invoice
[2] IRN and e-way after a sale
Register a sale that crosses the e-invoice threshold to get its IRN and acknowledgement
Mint the e-way bill for the dispatch copy
[3] Collections and receivables
Create a payment link and UPI QR once settlement KYC clears
Fire a reminder carrying the outstanding balance
[4] UAE FTA archiving
Sign in with TIN and OTP, then download the FTA e-invoice PDF
Store it next to the Indian IRN record
[5] Multi-firm and multi-currency sync
List cloud-synced company books by company_global_id
Stamp live AED/INR/USD rates on multi-currency invoices
DELIVERY & PRICING
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Two delivery options: runnable source code you own, or a hosted API billed per call
Scoped integrations from USD 500 with source-code handoff
Delivery in 3–7 days
Payment only after acceptance, with NDA + SOW on every engagement and work scoped to authorized use
Note: the page states its endpoints and examples are reconstructed from the app's interface and are illustrative, not a live capture.
CONCLUSION
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Vyapar holds the records that GST and FTA compliance depend on: verified GSTINs, IRNs, e-way bills, payment links and party balances. With a documented data API, you can feed them into ERP, reconciliation and collections workflows without rebuilding anything by hand.
To see the full endpoint list and fields, or to get a quote, visit:
https://opendata-studio.com/apps/vyapar-invoice-gst-billing/