Integrate Qualified Electronic Signatures into Your Applications
The e-Signature.eu API gives you access to itsme®, Evrotrust and Veriff from a single endpoint. eIDAS compliant. No subscription.
One integration, all signature methods
A single API contract, a single integration to access all eIDAS signature methods available on the platform.
Standard REST API
Documented RESTful architecture, compatible with all languages and frameworks. Fast integration in a matter of hours.
Webhooks & callbacks
Get notified in real time at every step: signature completed, reminder sent, declined or expired.
Inline signing on your site
In embedded mode, the signing URL is returned directly to your server — your clients sign without leaving your environment.
Global coverage
From Europe (itsme®, Evrotrust) to the entire world (Veriff, 198 countries) — one API covers all your markets.
Usage-based billing
No subscription, no fixed costs. You only pay for signatures actually completed.
Unified dashboard
All signatures triggered via the API are visible in your e-Signature.eu dashboard — a centralised interface to manage, monitor and audit all your requests.
QES, AES or SES — you choose the level
The API exposes all four signature methods available on the platform. Dynamically select the eIDAS level suited to each document or regulatory context.
itsme®
Evrotrust
Veriff
OTP Email
⚖️ Only a qualified electronic signature (QES) is legally equivalent to a handwritten signature under the eIDAS regulation.
Two operating modes, one single endpoint
Choose the mode that fits your architecture and the experience you want to deliver to your users.
📧 Invitations managed by e-Signature.eu
You send the document and the signatories’ details. The platform handles email invitations, reminders and tracking — with no effort on your side.
- Quick and lightweight integration
- Emails, reminders and tracking included
- Ideal for asynchronous workflows
🔗 Signing URLs returned to your server
The API returns the signing URLs directly to your server. Immediately redirect your clients to the signing page within your own site or application — zero friction.
- 100% experience within your environment
- Real-time signing, on your site
- Ideal for conversion funnels and onboarding
2 steps to integrate signing
An API designed for simplicity: authenticate, send, and everything else arrives by webhook.
Authentication & submission
Secure API key, then send the PDF with the signatories’ details, the chosen signature method and the operating mode (email or server URL).
Signing & retrieval
Email sent or URL returned to your server. Signature status and signed document (Base64) delivered automatically by webhook.
🧰 Developer resources
Test environment
Perform real signatures at a reduced rate to validate your integration under real conditions.
Postman collection
Import and run all endpoints in one click, with pre-configured examples.
Interactive documentation
Complete reference for parameters, responses, error codes and scenarios.
Code samples
Ready-to-use snippets for common use cases, in multiple languages.
Built for business-critical workflows
The e-Signature.eu API integrates into your existing processes wherever manual signing creates friction.
CRM & Contract management
Trigger a QES signature request as soon as a quote is approved, directly from Salesforce, HubSpot or Odoo.
Banking & Insurance
Client onboarding, SEPA mandates, insurance contracts — with built-in identity verification via Evrotrust or Veriff.
Real estate
Leases, mandates and sale agreements signed by all parties via sequential or parallel workflows.
International operations
Cover all your markets: QES across Europe with Evrotrust, AES in 198 countries with Veriff — one single integration.
Regulatory filings
Certain administrations require a QES. The API lets you integrate it directly into your filing or compliance workflow.
HR & Onboarding
Employment contracts, amendments, NDAs — collect signatures without any break in the user journey.
Pay-as-you-go — no subscription
Top up credits as you need them. The higher your volume, the lower your cost per credit.
1 credit = 1 QES signature, regardless of the number of documents in the request. No monthly fees, no commitment.
Ready to integrate eIDAS signing?
Join the first integrators and start your integration with priority support.