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Integrate electronic signatures into your apps and workflows with SignatureAPI.

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Get started

API Quickstart

Create your first envelope and send it for signature using the REST API.

Power Automate Quickstart

Build your first no-code signing workflow in Power Automate.

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What you can do

Send documents for signature

Send to multiple signers in parallel or sequential order. Track every envelope from creation to completion.

Generate documents from templates

Fill templates with dynamic data to produce ready-to-sign documents.

Collect information from signers

Add input fields, checkboxes, and dropdowns to capture data during signing.

Embed signing in your app

Embed the signing experience directly in your web or React Native app.

Automate with Power Automate

Build no-code signing workflows connected to 1,000+ apps.

Get notified via webhooks

Receive real-time updates when envelopes are signed, completed, or canceled.
See all capabilities

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How it works

1

Create an envelope

An envelope holds your documents and recipients. Add documents directly as PDFs or generate them from templates.
// POST https://api.signatureapi.com/v1/envelopes
// X-API-Key: key_test_...
// Content-Type: application/json

{
    "title": "Dummy Consent",
    "documents": [
        {
            "format": "pdf",
            "url": "https://pub-9cb75390636c4a8a83a6f76da33d7f45.r2.dev/privacy-placeholder.pdf",
            "places": [
                {
                    "key": "signer_signs_here",
                    "type": "signature",
                    "recipient_key": "visitor"
                }
            ]
        }
    ],
    "recipients": [
        {
            "type": "signer",
            "key": "visitor",
            "name": "John Doe",
            "email": "john@example.com"
        }
    ]
}
2

Recipients receive a signing link

Each recipient gets a link to review and sign. You can control the signing order and authenticate recipients before they access the documents.Signing request email
3

Recipients sign during a ceremony

A ceremony is the guided signing session where recipients review documents and complete their actions.Signing ceremony
4

Retrieve the signed deliverable

After all recipients complete their actions, SignatureAPI generates a deliverable containing the signed documents and an audit log.Audit log

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Explore

Concepts

Learn the core building blocks: envelopes, documents, recipients, ceremonies, and deliverables.

API Overview

Endpoints, authentication, test mode, pagination, and error handling.

API Playground

Try the API directly in your browser.

Postman Collection

Import our Postman collection and start exploring.

Embedded Signing

Integrate the signing experience into your web or mobile app.

Can I ___?

Quick answers to common questions about SignatureAPI capabilities.