eSignature API for Objective C
developers.

Free to test
Fast to deploy
Powerful & secure

Powerful eSignature API with a comprehensive Objective C SDK

The airSlate SignNow API empowers users to complete entire document approval cycles. Sign and send documents for signature, request payments, create and pre-fill reusable templates, and track the status of documents.

Upload a PDF and create fillable fields Add fields to documents to create fillable PDFs

Send a document for signature Invite others to fill out and sign forms via email

Track document completion status Get notified once the document is completed

Download and save signed documents Take advantage of a powerful eSignature API

.NET

Node.js

curl

Python

Java

Copy code

public static partial class InviteExamples
    {
        /// <summary>
        /// Create a role-based invite to the document for signature.
        /// </summary>
        /// <param name document"">airSlate SignNow document with fields you’d like to have signed
        /// <param name email"">The email of the invitee.
        /// <param name token"">Access token
        /// <returns><see cref InviteResponse""></see> without any Identity of invite request.</returns>
        public static async Task<InviteResponse> CreateRoleBasedInviteToSignTheDocument(SignNowDocument document, string email, Token token)      
        {
            // using token from the Authorization step
            var signNowContext = new SignNowContext(token);
 
            // Create role-based invite
            var invite = new RoleBasedInvite(document)
            {
                Message = $"{email} invited you to sign the document {document.Name}",
                Subject = "The subject of the Email"
            };
 
            // Creates options for signers
            var signer = new SignerOptions(email, invite.DocumentRoles().First())
                {
                    ExpirationDays = 15,
                    RemindAfterDays = 7,
                }
                .SetAuthenticationByPassword("***PASSWORD_TO_OPEN_THE_DOCUMENT***");
 
            // Attach signer to existing roles in the document
            invite.AddRoleBasedInvite(signer);
 
            // Creating Invite request
            return await signNowContext.Invites
                .CreateInviteAsync(document.Id, invite)
                .ConfigureAwait(false);
        }
    }</InviteResponse>

public static partial class DocumentExamples
    {
        /// <summary>
        /// Check the Status of the Document
        /// <para>Can be one of:</para>
        /// <list type bullet"">
        /// <item><description><see cref DocumentStatus.NoInvite""></see></description></item>
        /// <item><description><see cref DocumentStatus.Pending""></see></description></item>
        /// <item><description><see cref DocumentStatus.Completed""></see></description></item>
        /// </list>
        /// </summary>
        /// <param name documentId"">Identity of the document
        /// <param name token"">Access token
        /// <returns><see cref DocumentStatus""></see></returns>
        public static async Task<DocumentStatus> CheckTheStatusOfTheDocument(string documentId, Token token)    
        {
            // using token from the Authorization step
            var signNowContext = new SignNowContext(token);
 
            var document = await signNowContext.Documents
                .GetDocumentAsync(documentId).ConfigureAwait(false);
 
            return document.Status;
        }
    }</DocumentStatus>

curl -X PUT \
    'https://api.signnow.com/document/{{document_id}}' \
    -H 'Authorization: Bearer {{bearer_token}}' \
    -H 'Content-Type: application/json' \
    -d '{
      "fields": [
        {
          "x": 305,
          "y": 18,
          "width": 122,
          "height": 10,
          "page_number": 0,
          "label": "first_name",
          "role": "Signer",
          "required": true,
          "type": "text",
          "prefilled_text": "John"
        },
        {
          "x": 305,
          "y": 38,
          "width": 122,
          "height": 10,
          "page_number": 0,
          "label": "last_name",
          "role": "Signer",
          "required": true,
          "type": "text",
          "prefilled_text": "Doe"
        },
        {
          "x":305,
          "y":67,
          "width":100,
          "height":34,
          "page_number":0,
          "label":"a sample label",
          "role":"Signer",
          "required":true,
          "type":"signature"
        }
      ]
    }'

public String uploadDocumentWithTags(@RequestParam("file") MultipartFile file,
                                       Model model,
                                       RedirectAttributes redirectAttributes
  ) {
      try {
          if (isUserNotAuthorized()) {
              return getLoginRedirectPage(redirectAttributes, "/examples/uploadDocumentWithTags");    
          }
          //upload document with tags to parse
          String documentId = provider.get().getSnClient()
                  .documentsService()
                  .uploadDocumentWithTags(file.getInputStream(), file.getOriginalFilename());
          updateDocumentList();
          model.addAttribute("message", "fileId: " + documentId);
      } catch (IOException | SNException e) {
          model.addAttribute("message", String.format("Couldn't upload document %s because %s %s"    
                  , file.getOriginalFilename(), e.getMessage(), e.getCause())
          );
      }
      return "add_text_tag_on_document";
  }

public String simpleFromInvite(@ModelAttribute SimpleFromInvite simpleFromInvite, Model model, RedirectAttributes redirectAttributes) {     
        if (isUserNotAuthorized()) {
            return getLoginRedirectPage(redirectAttributes, "/examples/simpleFromInvite");
        }
 
        final String fromEmail = simpleFromInvite.getFrom();
        final String toEmail = simpleFromInvite.getTo();
        final String documentId = simpleFromInvite.getDocumentId();
 
        try {
            model.addAttribute("documentList", provider.get().getUserDocuments());
            //create request for invite
            Document.SigningInviteRequest request = new Document.SigningInviteRequest(
                    fromEmail,
                    toEmail
            );
            request.subject = simpleFromInvite.getSubject();
            request.message = simpleFromInvite.getMessage();
 
            //send request for invite
            provider.get().getSnClient()
                    .documentsService()
                    .sendDocumentSignInvite(documentId, request);
 
            model.addAttribute("message",
                    String.format("Invitation for sign document %s already sent to %s from %s",
                            documentId,
                            toEmail,
                            fromEmail
                    )
            );
        } catch (SNException e) {
            String message = String.format("Couldn't send invitation request from %s to %s for sign document %s. %s %s"
                    , fromEmail, toEmail, documentId, e.getMessage(), e.getCause());
            model.addAttribute("message", message);
        }
 
        return "simple_from_invite";
    }

View all API features View full API reference

Embed electronic signatures into your solution with airSlate SignNow’s Objective C-ready API

The airSlate SignNow PDF signature API allows you to embed electronic signatures into your solution with airSlate SignNow’s Objective C-ready API. No need to contact sales to get started: create your sandbox account and test the airSlate SignNow API for free.

Brandable workflows

Customize eSignature workflows with your company’s branding.

Competitive & scalable pricing

Our pricing plans accommodate the needs of your business.

Fast setup

Detailed documentation and clear coding examples ensure an excellent developer experience.

High success rate

Superior app performance guaranteed with our 24/7 API monitoring.

Solution engineers

We are here to help you configure eSignature API to your workflow.

Review airSlate SignNow’s API documentation

The detailed API tutorial will guide you through the entire integration process and provide clear coding examples.

Video guides

Watch our video guides for instructions on how to easily build custom integrations.

Start with any of our SDKs

Get complete SDKs for Node.js, Python,
PHP, Java, C#.

What our customers say about our eSignature API

The founder of SportsForms integrated airSlate SignNow eSignatures with their online registration platform to speed up processes and eliminate paper usage.

Read full story

The airSlate SignNow team has been exceptional, responsive, the API has been great, and we're extremely happy that we chose airSlate SignNow as a company.

Read full story

We found airSlate SignNow to be better priced and exactly the solution we needed. airSlate SignNow has lowered our enrollment completion process by a day or two depending on the member.

Read full story

Ready to get started?

Industry-compliant eSignature functionalities for your app

Streamline document workflows with airSlate SignNow’s brandable eSignature API: easily manage documents and collect legally-binding eSignatures in a single interface.

Compare airSlate SignNow’s eSignature API with other services

Learn what distinguishes airSlate SignNow from its competitors

This chart represents a partial list of features available in airSlate SignNow and DocuSign.

DocuSign

Unlimited templates

Basic fields

Advanced fields

Text tags for field creation

Embedded signing

Intermediate API plan+

Embedded sending

Intermediate API plan+

Role-based signature invites

Freeform signature invites

Bulk sending

Intermediate API plan+

Reporting

Intermediate API plan+

Branding

Intermediate API plan+

Sandbox API

Price

Professional plan

$146_/month

1000 docs/year

Intermediate plan

$300_/month

100 docs/month

Want to see more features? Show more

Getting Started with the airSlate SignNow API course

Explore the nuts and bolts of setting up easy-to-use and secure eSignature workflows for the applications and services you’re already using with the airSlate Academy.

Learn more

FAQs

Below is a list of the most common questions and answers about airSlate SignNow’s eSignature API. Choose a question to view a detailed answer.

Need help? Contact support

Follow these simple steps to test the eSignature API:

Create a Sandbox account. Submit your email address in the quick form to register.
Validate your account. Follow the link in the email to proceed with the registration.
Access Developer Sandbox. Provide a password to access your developer environment.
Get your credentials. Go to Keys -> Test App to find your account credentials.
Generate a Bearer Token. Use Postman or any Client that supports API requests to create and validate your Bearer Token.
Test eSignature. Explore airSlate SignNow’s capabilities and evaluate the eSignature API.

These 6 simple steps will help you embed eSignatures into your application. Create, send, and eSign documents directly from your app. Try out our robust eSignature capabilities and compare airSlate SignNow API vs DocuSign API!

How it works

Create an account and access the API Dashboard

Copy required code from the library to collect payments along with signed documents using API

Track how your productivity grows with accelerated workflows

Why choose our eSignature API

Ease of integration

airSlate SignNow’s eSignature solution was created with the user in mind. This eSignature API can be integrated with your software in less than ten minutes.

Cost efficiency

Our cost-efficient eSignature solution will help you save time, money, and hassle. Our API pricing plans accommodate the needs of all types of businesses.

Brandable eSignature

Quickly edit and send your custom branded digital documents. With airSlate SignNow’s eSignature API, take advantage of eSignature functionalities while keeping your company’s branding.

24/7 support

Reach out to our support team with any questions that may arise during the integration process. We are happy to help you at any time!

Learn more about our eSignature API

Integrate eSignature functionalities into your app

Speed up document turnaround times by providing eSignature capabilities in your app/website.

Learn more

Send signature invites via email

Share links to your documents via email and invite recipients to open and sign them in just a few clicks.

Learn more

Make fillable forms

Easily collect data by integrating customized surveys and questionnaires into your website.

Learn more

Create templates

Upload a document and save it as a reusable template with our eSignature API.

Learn more

Set signer reminders

Set up automatic notifications to track document completion in real-time – no need to track down documents or signatures.

Learn more

Check the status of your documents

Review a detailed, court-admissible Audit Trail to view the entire log of actions and changes made in a document.

Learn more

Ready to get started?

It’s time to see airSlate SignNow’s document generation API in action. Create your developer account and upload documents, request signatures, and check the status of your documents.

Create a sandbox account Talk to sales

Why choose airSlate SignNow’s eSignature API?:

Free to test and easy to deploy
SDKs for popular languages
Customizable for any workflow
Industry-leading security & compliance

eSignature API for Objective C
developers.

Powerful eSignature API with a comprehensive Objective C SDK