WhiteBooks e-Invoice API Reference (OpenAPI 3.0)

The WhiteBooks e-Invoice API generates IRN (Invoice Reference Numbers) and signed QR codes against the official Invoice Registration Portal (IRP) in <100 ms typical latency. Supports bulk IRN (up to 1,000 invoices per call), cancellation within the 24-hour IRP window, and webhook callbacks for async batches.

Base endpoints

Production: https://api.whitebooks.in/einvoice
Sandbox: https://apisandbox.whitebooks.in/einvoice

Primary operations

POST /api/v1/generate-irn — Generate IRN for a single invoice
POST /api/v1/bulk-generate-irn — Bulk IRN (up to 1,000 invoices)
POST /api/v1/cancel-irn — Cancel IRN within 24h IRP window
GET /api/v1/irn-by-docnumber — Lookup IRN by document number
GET /api/v1/qr/{irn} — Fetch signed QR code

Quick links

Raw OpenAPI 3.0 spec (JSON)
Landing page with pricing, FAQ, code samples
Pricing tiers
Changelog
Status
Glossary (IRN, IRP, QR, etc.)

Schedule Demo

Structured data (Schema.org JSON-LD)

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WhiteBooks e-Invoice API Reference (OpenAPI 3.0)

Base endpoints

Primary operations

Quick links

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Structured data (Schema.org JSON-LD)