# WhiteBooks e-Way Bill API for Developers

> WhiteBooks e-Way Bill API: REST API for the complete e-Way Bill lifecycle through the official NIC e-Way Bill system. Generate, update Part-B (vehicle/transporter), cancel, extend, consolidate. NIC-compliant.

URL: https://whitebooks.in/api/e-way-bill-api-for-developers

## Key facts
- Endpoints: Generate, Update Part-B, Cancel, Extend, Reject, Consolidate, Status, Verify
- Part-A + Part-B workflow supported (deferred Part-B for later vehicle assignment)
- Bulk endpoint: up to 1,000 EWBs per call
- Auto-extension tracking per EWB · webhook notifications for expiry alerts
- NIC error code passthrough with retry/exponential backoff for transient outages
- Base URLs: Sandbox apisandbox.whitebooks.in/eway · Production api.whitebooks.in/eway
- SDKs: Java, Node.js, Python · Postman collection
- ERP integrations: SAP, Tally, Oracle, Dynamics, Marg

## Contact
- Sales: +91 9032111788 · sales@whitebooks.in
- Technical support: +91 9032111388 · support@whitebooks.in
- Registered Office: 8-2-682/3/A/24, Road No 12, Banjara Hills, Hyderabad, Telangana 500034, India
- Corporate Office: Flat No: 303, Gayathri Heights, Jubilee Enclave, Hitech City, Hyderabad, Telangana 500081, India
- Parent company: WhiteBooks is the product of BVM IT Consulting Services India Pvt Ltd (www.bvmcs.com)

## Machine-readable resources
- Site-wide index: https://whitebooks.in/llms.txt
- Full content: https://whitebooks.in/llms-full.txt
- AI crawler policy: https://whitebooks.in/.well-known/ai.txt
- Sitemap: https://whitebooks.in/sitemap-index.xml
- Robots: https://whitebooks.in/robots.txt