SIGN REQUEST API

API Docs for Fast, Secure Document Signing

Integrate templates, signer routing, and webhook automation in your app with a simple REST flow. Built for developers who want quick setup and reliable delivery.

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Trusted workflow style: SaaS onboarding, HR offer letters, internal approvals.

First Request

POST /api/v1/sign-request
Authorization: Bearer sk_live_xxxxxx
Content-Type: application/json

{
  "template_id": "tpl_123",
  "title": "Offer Letter",
  "signers": [{"role":"client","email":"john@example.com"}]
}

Why Teams Use This API

Clean endpoint design, predictable behavior, and template-first workflows.

Simple REST Integration

No SDK required. Use standard HTTPS calls from any backend.

Template-Based Sending

Create templates in panel, then reuse them by `template_id` in API calls.

Real-Time Webhooks

Track `request.sent`, `viewed`, `signed`, and `completed` instantly.

Go Live in 3 Steps

Generate API Key

Create a key from your panel and use it in Bearer auth header.

Create Request

Call `POST /api/v1/sign-request` with template ID + signer list.

Handle Webhooks

Update your product logic when signing events are delivered.

API Reference

Use this endpoint to create sign requests from saved templates.

Main Endpoint REST

POST /api/v1/sign-request

Headers

Authorization: Bearer sk_live_xxxxxx
Content-Type: application/json

Request Body

{
  "template_id": "tpl_123",
  "title": "Offer Letter",
  "signers": [
    {
      "role": "client",
      "email": "john@example.com"
    }
  ],
  "redirect_url": "https://yourapp.com/success",
  "webhook_url": "https://yourapp.com/webhook"
}

Request Parameters

Field	Type	Required	Description
template_id	string	Yes	Template created via panel
title	string	Yes	Request name
signers	array	Yes	List of signers
signers[].role	string	Yes	Signer role (e.g. client, vendor)
signers[].email	string	Yes	Signer email
redirect_url	string	No	After signing redirect
webhook_url	string	No	Override webhook

Success Response (200) JSON

{
  "request_id": "req_abc123",
  "status": "sent",
  "signers": [
    {
      "role": "client",
      "email": "john@example.com",
      "signing_url": "https://app.com/sign/secure_token"
    }
  ]
}

Error Responses JSON

{
  "error": "Invalid API key"
}

{
  "error": "API access not allowed in your plan"
}

{
  "error": "Your plan allows only 1 signer"
}

{
  "error": "Invalid template_id"
}

Webhook Events

Event occurs -> send webhook -> log result.

Event	Description
request.sent	Request created
request.viewed	Signer opened link
request.signed	One signer completed
request.completed	All signers done

Client endpoint: POST https://client.com/webhook

Retry + Security

Retry 2-3 times on webhook failure
Log every failed attempt
Use header: X-Signature: sha256=xxxxx
Verify payload authenticity on client side

Ready to Build with the Sign Request API?

Generate an API key, create a template, and send your first request in minutes.

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