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E-Signature API

E-Signature API Integration and Digital Signature Infrastructure

Connect e-signature, mobile signature and digital signature processes to your systems with the Dijital Belge API solution. Create documents programmatically, open them for signing, track and archive them. Digitize your corporate processes quickly with a platform-independent REST API architecture.

What Can You Do with the API?

Manage the entire document creation, signing and storage process with a single integration.

REST API Architecture

Integrate your signing processes into your own web, mobile or desktop applications easily with a JSON-based, platform-independent REST API.

Multiple Signature Types

Manage e-signature, mobile signature, NFC identity signing, OTP, e-mail, SMS and initial signature methods through a single API.

Document Template Management

Turn frequently used contracts and forms into templates; generate ready-to-sign documents instantly with dynamic data via the API.

Signature Workflow Management

Define multi-signer and sequential signer scenarios, approval steps and reminders in code or manage them from the panel.

Timestamp and Archive

Add a timestamp that supports legal validity to every signing transaction; store documents and audit records securely.

Webhook Support

Automate your processes by sending instant notifications to your system when signing is completed or a step advances.

In Which Sectors Is It Used?

Automate all business processes that require signatures via the API.

Human Resources

Automate the signing of hiring contracts, payroll and HR documents.

Banking and Finance

Digitize loan, account opening and customer acceptance processes.

Insurance

Sign policy and proposal documents quickly and verifiably.

Real Estate

Open lease and sales contracts for remote, secure signing.

Healthcare

Manage consent forms and patient documents with digital signature.

Public and Corporate

Connect your EDMS and internal approval flows to the e-signature infrastructure.

Sample Integration Scenarios

Automate signature flows inside your ERP, CRM, HR and accounting systems end-to-end with a single API. The scenarios below can be implemented exactly with the sample requests in the documentation.

ERP: Purchase and Order Approval

The purchase request approved in the ERP turns into an order and supplier contract and is opened for signing via the API. The supplier signs with e-signature and the result is written back to the ERP via webhook.

  1. 1Approval → create document
  2. 2Add supplier as signer
  3. 3Sign with e-signature
  4. 4Webhook → save to ERP
E-SignatureMobile Signature

CRM: Proposal and Sales Contract

When an opportunity is won in the CRM, the proposal/contract template is filled with data and sent to the customer for signing with one click; the signature status is written to the opportunity record.

  1. 1Opportunity won → fill template
  2. 2Send signing invitation to customer
  3. 3E-signature / OTP approval
  4. 4Sync status to CRM
E-SignatureE-mail ApprovalSMS OTP

Human Resources: Hiring and Payroll

The hiring contract, confidentiality undertaking and payroll are generated in bulk and sent to employees for signing; the highest assurance level can be used for the contract and a lower level for the payroll.

  1. 1Bind HR data to the template
  2. 2Generate documents in bulk
  3. 3Send signing invitation to employee
  4. 4Archive signed documents
E-SignatureMobile SignatureE-mail Approval

Banking and Insurance: Digital Onboarding (KYC)

In remote customer onboarding, identity verification with TCKK NFC, face recognition and location/device evidence are collected; contracts are signed in the same flow.

  1. 1Read TCKK NFC
  2. 2Face recognition + liveness
  3. 3Collect location/device evidence
  4. 4Sign the contract
TCKKTCKK + Face RecognitionVideo Onboarding

Logistics: Field Delivery Report

The courier or driver opens the delivery report on their tablet/phone in the field with Sümen Mobil; the recipient approves with NFC identity or OTP, and the evidence flows to the center instantly.

  1. 1Start shipment
  2. 2Show document in the field
  3. 3Get approval with NFC / OTP
  4. 4Report to the center
TCKKSMS OTPInitial Signature

Accounting and Finance: Reconciliation and Approval

Reconciliation letters, statement approvals and payment instructions are opened for bulk signing with ERP integration; when signing is completed, the collection/payment process is triggered.

  1. 1Generate reconciliation list
  2. 2Bulk signing invitation
  3. 3Collect signature/approval
  4. 4Trigger the next process
E-SignatureE-mail Approval

Integration in 4 Steps

01

Get an API Key

Create your Dijital Belge account and generate your dedicated API key.

02

Integrate

Connect the signing flow to your system with the sample requests in the documentation.

03

Send the Document

Send the document or template via the API and define the signers.

04

Complete the Signature

When the signature and approval are completed, transfer the result to your system via webhook.

Frequently Asked Questions

Frequently Asked Questions About the E-Signature API

How long does e-signature API integration take?+

A standard signing flow can be integrated in a few days on average thanks to ready-made samples and documentation. For complex and institution-specific scenarios, the process is planned on a project basis.

Which programming languages are supported?+

The REST API is compatible with all languages that can send HTTP requests (Java, C#, PHP, Python, Node.js, etc.). It works platform-independently.

Are credits required for signing transactions?+

Yes. The credits consumed vary by method: e-signature, mobile signature, e-mail and SMS/OTP approval consume 1 credit; TCKK (identity) approval and TCKK + face recognition consume 2 credits; TCKK + face recognition + video onboarding consume 3 credits. You can review current credit packages on our pricing page.

Do signatures have legal validity?+

E-signature produces the same legal consequences as a wet signature under Law No. 5070 on Electronic Signatures. Signatures made with qualified certificates are legally valid.

Can I use my own document templates?+

Yes. Upload your Word/PDF templates; define dynamic fields, merge them with data via the API and generate ready-to-sign documents.

Start Integrating Today

Set up your first signing flow in minutes with the sample requests in our API documentation. You can reach our technical team via contact.

WhatsApp Destek Hattı+90 312 963 44 17