Undersign | API Reference: SDKs & Examples Overview

API Reference SDKs & Examples

SDKs & Examples

The Undersign API can be called from any language capable of making HTTPS requests. These examples show common integration patterns.

No SDK required

The API is a plain REST API over HTTPS. You can call it directly with your language's HTTP client. The examples on these pages use the same documented endpoints and field names you'll find across the reference.

Examples by language

cURL

Interact with the API from the command line.

PHP

Call the API from server-side PHP.

JavaScript

Call the API from server-side Node.js.

Python

Call the API from Python with requests.

Integration Examples

Ready-to-adapt recipes for common workflows.

Keep credentials server-side

All examples keep tokens in environment variables and run on the server. Never expose API credentials in browser JavaScript, public HTML, source repositories or mobile code. See Authentication.