API Documentation

Build custom e-signature workflows with our comprehensive REST API. Available on all tiers.

Quick Start

# Install the SDK
npm install @supersign/sdk

# Or use cURL directly
curl https://api.supersign.cc/v1/envelopes \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "document": "base64_pdf_here",
    "recipients": [
      {"email": "signer@example.com", "name": "Jane Doe"}
    ]
  }'

1. Get API Key

Generate an API key from your dashboard Settings → API Keys.

2. Make Your First Request

Use the code example above to create your first envelope.

Core Resources

Envelopes

Create, retrieve, update, and delete signature envelopes.

POST /v1/envelopes

Recipients

Manage signers, viewers, and approvers for documents.

POST /v1/recipients

Templates

Create reusable document templates with pre-defined fields.

GET /v1/templates

Webhooks

Receive real-time notifications for signature events.

POST /v1/webhooks

Authentication

OAuth 2.0 and API key authentication methods supported.

Authorization: Bearer

Audit Trails

Retrieve complete audit logs for compliance.

GET /v1/audit-trails

Official SDKs

📘

TypeScript

npm install @supersign/sdk

🐍

Python

pip install supersign

🔷

Go

go get supersign.cc/sdk

Start Building Today

Full API access is available on all tiers, including self-hosted deployments.

Get API Key Full Documentation