E-Sign API | Better Sales Pro API Docs

Build document and electronic signature workflows with Better Sales Pro.

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curl --request POST \
  --url https://bettersalespro.com/admin/api/addSignature \
  --data 'token=YOUR_TOKEN' \
  --data 'signature=BASE64_OR_PAYLOAD'

$ch = curl_init('https://bettersalespro.com/admin/api/addSignature');
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_POSTFIELDS => http_build_query([
    'token' => 'YOUR_TOKEN',
    // include signature payload fields required by your client
  ]),
]);
echo curl_exec($ch);

Overview

Better Sales Pro includes e-signature capabilities in the product (templates, Smart Forms, merge fields, signer workflows). The partner API currently exposes signature load and add methods. Broader envelope-style REST resources may expand over time—this guide documents what exists today and the recommended integration model.

Concepts

Templates — reusable document layouts in Better Sales Pro
Merge fields — dynamic values populated at send time
Signers — people who must complete signature or input fields
Smart Forms — shareable / embeddable completion experiences
Signature payload — captured signature data via API methods

Quickstart

Choose a document template in Better Sales Pro.

Populate merge data for the recipient context.

Add signers and required fields.

Send or embed the signing experience.

Capture signature data with addSignature where your client stores signatures via API.

Listen for completion via product webhooks / automations where configured.

Retrieve completed documents from Drive / project storage.

Signature endpoints

Documented methods:

POST /admin/api/loadSignature
POST /admin/api/addSignature

Details: Signature endpoints →

Smart Forms

Smart Forms reuse document templates, merge codes, input fields, and signature fields. Completion actions (save to project, notify staff, send copies, trigger automation) are configured in-product. Only use actions your account has enabled.

Webhooks

Prefer product automation + webhook receivers for completion events. See Webhooks.

Next steps

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