Skribble API Overview

The Skribble API lets you integrate legally binding electronic signatures directly into your applications, workflows, and systems — whether you're automating contract signing, digitizing HR processes, or building compliance tooling.

Available APIs

Sign API v2

Stable — The current stable version of the signing API, recommended for all production integrations. Backward compatible with v1 — existing v1 integrations continue to work without changes.

Sign API v3

Preview — Subject to Change

Sign API v3 is a preview release. The API surface may change before general availability. Do not use it in production without accepting that breaking changes may occur.

The next-generation signing API currently in preview. Key features:

• Draft workflow - Create signature requests in DRAFT status before initiating
• Multi-document support - Up to 50 documents per signature request
• Flexible signer management - Add/remove signers, support for signers without Skribble accounts
• Multiple signature qualities - SES, AES, and QES signatures
• Compliance - Supports both Swiss (ZertES) and EU (eIDAS) legislation

Validation API v1

Validate digitally signed documents and certificates:

• Document validation - Verify PDF and XML signatures
• Signature validation - Validate CMS/CAdES signatures independently
• Validation reports - Generate ETSI TS 119 102-2 compliant reports
• PDF processing - Convert, conform to PDF/A, and compress documents

Environment Overview

Environment	Purpose	API Key Prefix
Demo	Testing and development	api_demo
Production	Live transactions (billable)	api_production or api_prod

Quick Start

1. Get API credentials - Generate your API username and key in the Admin UI
2. Authenticate - Call /access/login to obtain a JWT token
3. First document to get signed - Create and submit your first signature request using the Sign API v2
4. Handle responses - Process results and implement appropriate error handling

Support

For questions or support, reach us at info@skribble.com.