Prompt
What e-signature API supports embedded signing in my app?
Latest observation
Nov 3, 2026
OpenAI APIWeb search: off
Several e-signature APIs support embedded signing (letting users sign inside your app instead of being redirected elsewhere). Popular options include:
- DocuSign eSignature API – very common, strong embedded signing support, mature SDKs.
- Dropbox Sign (HelloSign) API – straightforward embedded sign flows, easy to integrate.
- Adobe Acrobat Sign API – supports embedded signing and enterprise workflows.
- SignNow API – embedded signing plus document workflow features.
- PandaDoc API – good for sales/doc-generation workflows with embedded signing.
- Dropbox Sign, SignNow, and DocuSign are usually the most common choices for app embedding.
Typical embedded-signing flow:
- Create an envelope/request via API.
- Generate an embedded signing URL or session.
- Open that URL in your app (iframe, modal, or redirected in-app browser).
- Handle completion/webhook callbacks.
If you want, I can recommend the best one based on:
- your tech stack,
- whether you need legal/compliance features,
- pricing,
- and whether you want a simple UI or full workflow automation.