Complete document creation and signing process for your SaaS with JavaScript

const jwt = require('jsonwebtoken');

const API_KEY = process.env.DOCUSEAL_API_KEY // Obtain from DocuSeal Console

const token = jwt.sign({
  user_email: 'admin@company.com',
  integration_email: 'saas-user@company.com',
  external_id: 'TestForm123',
  name: 'Integration W-9 Test Form',
  document_urls: ['https://www.irs.gov/pub/irs-pdf/fw9.pdf'],
}, API_KEY);

use Firebase\JWT\JWT;

$apiToken = getenv('DOCUSEAL_API_KEY'); // Obtain from DocuSeal Console

$payload = [
  'user_email' => 'admin@company.com',
  'integration_email' => 'saas-user@company.com',
  'external_id' => 'TestForm123',
  'name' => 'Integration W-9 Test Form',
  'document_urls' => ['https://www.irs.gov/pub/irs-pdf/fw9.pdf'],
];

$token = JWT::encode($payload, $apiToken, 'HS256'); // Encode the payload into a JWT

require 'jwt'

api_key = ENV['DOCUSEAL_API_KEY'] # Obtain from DocuSeal Console

payload = {
  user_email: 'admin@company.com',
  integration_email: 'saas-user@company.com',
  external_id: 'TestForm123',
  name: 'Integration W-9 Test Form',
  document_urls: ['https://www.irs.gov/pub/irs-pdf/fw9.pdf']
}

token = JWT.encode(payload, api_key) # Encode the payload into a JWT

import jwt
import os

api_key = os.getenv('DOCUSEAL_API_KEY') # Obtain from DocuSeal Console

payload = {
  'user_email': 'admin@company.com',
  'integration_email': 'saas-user@company.com',
  'external_id': 'TestForm123',
  'name': 'Integration W-9 Test Form',
  'document_urls': ['https://www.irs.gov/pub/irs-pdf/fw9.pdf']
}

token = jwt.encode(payload, api_key, algorithm='HS256') # Encode the payload into a JWT

using System;
using System.Security.Cryptography;
using System.Text;

class Program
{
  static void Main()
  {
    var secretKey = Encoding.UTF8.GetBytes("Put API token from ENV here");

    var token = GenerateJwt(secretKey);

    Console.WriteLine(token);
  }

  static string GenerateJwt(byte[] secretKey)
  {
    var payload = @"{
        ""user_email"": ""admin@company.com"",
        ""integration_email"": ""saas-user@company.com"",
        ""external_id"": ""TestForm123"",
        ""name"": ""Integration W-9 Test Form"",
        ""document_urls"": [
            ""https://www.irs.gov/pub/irs-pdf/fw9.pdf""
        ]
    }";
    var header = Base64UrlEncode(Encoding.UTF8.GetBytes("{\"alg\":\"HS256\",\"typ\":\"JWT\"}"));

    var payloadJson = Base64UrlEncode(Encoding.UTF8.GetBytes(payload));

    var headerPayload = $"{header}.{payloadJson}";

    using (var hmac = new HMACSHA256(secretKey))
    {
      var signatureBytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(headerPayload));
      var signature = Base64UrlEncode(signatureBytes);

      return $"{headerPayload}.{signature}";
    }
  }

  static string Base64UrlEncode(byte[] data)
  {
    var base64 = Convert.ToBase64String(data);
    return base64.TrimEnd('=').Replace('+', '-').Replace('/', '_');
  }
}