Pearl eSign API is a secure, REST-based digital signing solution that enables SAP, Microsoft Dynamics, Oracle ERP, Any Custom ERP/CRM/DMS, workflow, and enterprise applications to digitally sign documents programmatically. It supports PDF and Base64 content signing, USB Token DSC, Aadhar eSign and PFX (DocuSigner Certificate) based signing, bulk document signing, DSC validation, audit trails, and secure API key authentication. The API uses JSON request/response architecture and can return signed documents instantly for storage within your existing application. Documents are processed during signing and are not permanently stored. Pearl eSign API helps organizations automate document signing, reduce manual processes, improve workflow efficiency, and scale digital signing across teams and departments. It is suitable for SAP, Microsoft 365, Dynamics, Any ERP/CRM/DMS, fintech, banking, government, and other enterprise applications.