Sign API v2

Our Sign API v2 is a REST API using European identity providers for creating electronic signatures on contracts, declarations, forms and other documents.

Core capabilities

OAuth2 for authentication: Secure API authorisation using the industry standard.
Customisable, responsive signing interface: Tailor the signing flow and appearance to match your brand's look and feel across all devices.
Standardised output formats: Generate electronically signed files in compliant XAdES (XML Advanced Electronic Signatures) or PAdES (PDF Advanced Electronic Signatures) formats.

Use case examples

Collecting of signatures on multiple documents at the same time: Coordinate complex signature workflows where multiple signers need to sign several related documents (such as rental or loan agreements).
Business-to-business (B2B) signing and sealing (Merchant signing): Support sealing and signing transactions involving corporate invoices and certificates, registration and de-registrations in public movables registry, as well as company registrations.
Frictionless consent capturing: Record binding user consent for terms and conditions, GDPR updates or simple text statements.
Long-term compliance & auditing: Automatically transfer finalised signed contracts to a tamper-proof repository with strict retention management.
Signicat Dashboard user management: Securely control who can configure, monitor or manage your Sign API v2 integrations.