Welcome to HelloSign's API Reference Documentation

Welcome to the HelloSign API reference documentation! Here you'll find information and examples about the endpoints and features in the HelloSign API. The HelloSign API allows you to build with a wide range of eSignature tools, such as sending a file to be signed over email or embedding signatures directly in your app.

Helpful links:

Download OpenAPI SpecDownload
Go to source filesGitHub link to HelloSign repo with openapi spec
Contact supportContact HelloSign Support
Send us feedbackForm to submit feedback to HelloSign

These API reference docs are newly launched. We've put lots of effort into improving content and completeness to support this launch, but the HelloSign API is a broad surface and you might find areas that need more love. Please consider contributing!