10 companies
eSign Verification APIs are digital signature services that allow businesses to electronically sign, verify, authenticate, and manage documents through software integrations. These APIs enable applications, websites, and enterprise systems to securely obtain legally valid signatures without requiring physical paperwork.
In India, eSign APIs are commonly integrated by fintechs, banks, NBFCs, insurance companies, e-commerce platforms, HR software, lending platforms, and legal-tech companies to complete agreements, contracts, KYC forms, loan documents, mandates, and onboarding processes digitally.
Why are eSign APIs Used?
Traditional document signing involves printing, signing, scanning, couriering, storing, and manually verifying documents. This process is slow, costly, and prone to fraud.
eSign APIs digitize the entire workflow by enabling:
Customers can sign documents from anywhere using Aadhaar-based eSign, OTP authentication, or digital certificates.
Banks, fintechs, and lenders can complete onboarding within minutes rather than days.
Most eSign providers ensure compliance with Indian regulations and maintain audit trails for legal validity.
The signer's identity can be verified through Aadhaar, PAN, mobile OTP, email OTP, or other authentication methods before signing.
Documents can be generated, sent, signed, verified, stored, and retrieved automatically through APIs.
How eSign Verification APIs Work Company generates a document. API sends signing request to customer. Customer authenticates using OTP or Aadhaar. Customer signs electronically. Platform verifies signer identity. Signed document is sealed with timestamp and audit trail. Signed PDF and verification certificate are returned through API. Benefits for Companies Reduced Operational Costs Eliminates printing and courier expenses. Reduces manual document handling. Minimizes storage costs. Faster Turnaround Time Agreements can be signed within minutes. Loan disbursals become faster. Customer onboarding becomes seamless. Better Customer Experience No branch visits required. Mobile-friendly signing process. Higher completion rates. Enhanced Security OTP-based authentication. Aadhaar-based verification. Tamper-evident documents. Complete audit logs. Regulatory Compliance Maintains legally admissible records. Supports compliance requirements for regulated industries. Reduced Fraud Risk Identity verification before signing. Timestamped audit trails. Document integrity checks. Automation at Scale Process thousands of documents automatically. Integrate directly with CRM, ERP, HRMS, lending, or onboarding systems. Reduce manual intervention. Common Use Cases Fintech & Lending Loan agreements Credit card applications KYC declarations NACH mandates Banking Account opening forms Customer consent forms Investment documentation Insurance Policy issuance Claims documentation Customer declarations HR & Recruitment Offer letters Employment contracts NDAs Employee onboarding documents E-commerce & Marketplaces Vendor agreements Seller onboarding Merchant contracts Legal & Enterprise Service agreements Vendor contracts Procurement approvals Corporate resolutions
10 companies
eSign Verification APIs are digital signature services that allow businesses to electronically sign, verify, authenticate, and manage documents through software integrations. These APIs enable applications, websites, and enterprise systems to securely obtain legally valid signatures without requiring physical paperwork.
In India, eSign APIs are commonly integrated by fintechs, banks, NBFCs, insurance companies, e-commerce platforms, HR software, lending platforms, and legal-tech companies to complete agreements, contracts, KYC forms, loan documents, mandates, and onboarding processes digitally.
Why are eSign APIs Used?
Traditional document signing involves printing, signing, scanning, couriering, storing, and manually verifying documents. This process is slow, costly, and prone to fraud.
eSign APIs digitize the entire workflow by enabling:
Customers can sign documents from anywhere using Aadhaar-based eSign, OTP authentication, or digital certificates.
Banks, fintechs, and lenders can complete onboarding within minutes rather than days.
Most eSign providers ensure compliance with Indian regulations and maintain audit trails for legal validity.
The signer's identity can be verified through Aadhaar, PAN, mobile OTP, email OTP, or other authentication methods before signing.
Documents can be generated, sent, signed, verified, stored, and retrieved automatically through APIs.
How eSign Verification APIs Work Company generates a document. API sends signing request to customer. Customer authenticates using OTP or Aadhaar. Customer signs electronically. Platform verifies signer identity. Signed document is sealed with timestamp and audit trail. Signed PDF and verification certificate are returned through API. Benefits for Companies Reduced Operational Costs Eliminates printing and courier expenses. Reduces manual document handling. Minimizes storage costs. Faster Turnaround Time Agreements can be signed within minutes. Loan disbursals become faster. Customer onboarding becomes seamless. Better Customer Experience No branch visits required. Mobile-friendly signing process. Higher completion rates. Enhanced Security OTP-based authentication. Aadhaar-based verification. Tamper-evident documents. Complete audit logs. Regulatory Compliance Maintains legally admissible records. Supports compliance requirements for regulated industries. Reduced Fraud Risk Identity verification before signing. Timestamped audit trails. Document integrity checks. Automation at Scale Process thousands of documents automatically. Integrate directly with CRM, ERP, HRMS, lending, or onboarding systems. Reduce manual intervention. Common Use Cases Fintech & Lending Loan agreements Credit card applications KYC declarations NACH mandates Banking Account opening forms Customer consent forms Investment documentation Insurance Policy issuance Claims documentation Customer declarations HR & Recruitment Offer letters Employment contracts NDAs Employee onboarding documents E-commerce & Marketplaces Vendor agreements Seller onboarding Merchant contracts Legal & Enterprise Service agreements Vendor contracts Procurement approvals Corporate resolutions
10 companies
DocuSign India
Bengaluru, Karnataka
· Est. 2003
Global electronic signature platform providing contract lifecycle management, document workflows and secure digital transactions.
Adobe Acrobat Sign
Noida, Uttar Pradesh
· Est. 2011
Enterprise electronic signature solution integrated with document management, workflow automation and compliance capabilities.
SignEasy
Bengaluru, Karnataka
· Est. 2010
Electronic signature and contract management platform with APIs, integrations and enterprise workflow capabilities.
Zoho Sign
Chennai, Tamil Nadu
· Est. 2017
Cloud-based electronic signature platform with API integrations, workflow automation, audit trails and enterprise document management.
SignDesk
Bengaluru, Karnataka
· Est. 2015
Digital onboarding and document automation platform providing Aadhaar eSign, eStamping, Video KYC, agreement management and workflow APIs.
Certinal
Chennai, Tamil Nadu
· Est. 2016
Digital transaction management and electronic signature platform designed for secure document execution and workflow automation.
Protean eSign
Mumbai, Maharashtra
· Est. 1995
Aadhaar-based electronic signature infrastructure provider enabling secure document execution and digital signing workflows.
eMudhra
Bengaluru, Karnataka
· Est. 2008
Licensed digital trust services provider offering Aadhaar eSign, Digital Signature Certificates, PKI infrastructure and document signing APIs.
Leegality
New Delhi, Delhi
· Est. 2016
Digital document execution platform offering Aadhaar eSign, eStamping, digital agreements, workflow automation and compliance solutions for enterprises, banks and fintechs.
TRUESigner ONE
Bengaluru, Karnataka
· Est. 2020
Electronic signature platform providing Aadhaar eSign, document workflows, digital approvals and compliance-ready audit trails.
Trust Cabbage lists 10 esign verification api services companies with verified reviews from real Indian businesses. Each review covers staff quality, communication, billing transparency, delivery, and after-sales support, giving you a complete picture before you engage a vendor. All reviews are from verified buyers. Write a review →
10 companies
DocuSign India
Bengaluru, Karnataka
· Est. 2003
Global electronic signature platform providing contract lifecycle management, document workflows and secure digital transactions.
Adobe Acrobat Sign
Noida, Uttar Pradesh
· Est. 2011
Enterprise electronic signature solution integrated with document management, workflow automation and compliance capabilities.
SignEasy
Bengaluru, Karnataka
· Est. 2010
Electronic signature and contract management platform with APIs, integrations and enterprise workflow capabilities.
Zoho Sign
Chennai, Tamil Nadu
· Est. 2017
Cloud-based electronic signature platform with API integrations, workflow automation, audit trails and enterprise document management.
SignDesk
Bengaluru, Karnataka
· Est. 2015
Digital onboarding and document automation platform providing Aadhaar eSign, eStamping, Video KYC, agreement management and workflow APIs.
Certinal
Chennai, Tamil Nadu
· Est. 2016
Digital transaction management and electronic signature platform designed for secure document execution and workflow automation.
Protean eSign
Mumbai, Maharashtra
· Est. 1995
Aadhaar-based electronic signature infrastructure provider enabling secure document execution and digital signing workflows.
eMudhra
Bengaluru, Karnataka
· Est. 2008
Licensed digital trust services provider offering Aadhaar eSign, Digital Signature Certificates, PKI infrastructure and document signing APIs.
Leegality
New Delhi, Delhi
· Est. 2016
Digital document execution platform offering Aadhaar eSign, eStamping, digital agreements, workflow automation and compliance solutions for enterprises, banks and fintechs.
TRUESigner ONE
Bengaluru, Karnataka
· Est. 2020
Electronic signature platform providing Aadhaar eSign, document workflows, digital approvals and compliance-ready audit trails.
Trust Cabbage lists 10 esign verification api services companies with verified reviews from real Indian businesses. Each review covers staff quality, communication, billing transparency, delivery, and after-sales support, giving you a complete picture before you engage a vendor. All reviews are from verified buyers. Write a review →
