Electronic Signature
Developers
Features
API for eSignature Solutions
Set up SMS authentication using the API | airSlate SignNow API

Customize an SMS
authentication message via the API

Ensure only verified users can access your embedded signing sessions. Enable two-factor authentication via SMS and customize the message you use to share a password with your recipient.

Free to test
Fast to deploy
Powerful & secure

Set up SMS authentication using the API

The airSlate SignNow API makes it easy to enhance the security of your documents by preventing unauthorized users from gaining access. When configuring your embedded eSignature invite, simply add an authentication parameter to the request body and specify the authentication method – SMS, create a password, and personalize your SMS message.

cURL

Node.js

C#

Java

Python

.NET

Copy code

curl --request POST \
      --url https://api-eval.signnow.com/v2/documents/document_id/embedded-invites \
      --header 'Accept: application/json, ' \
      --header 'Authorization: Bearer {{access_token}}' \
      --header 'Content-Type: application/json' \
      --data '{
          "name_formula": "document_name|signer1_name|date",
          "invites": [
            {
                "email": "signer_1_@emaildomain.com",
                "role_id": "role_id_1",
                "order": 1,
                "auth_method": "none",
                "first_name": "first_name",
                "last_name": "last_name",
                "prefill_signature_name": "Jane Doe",
                "force_new_signature": 1,
                "redirect_uri": "Your redirect URI",
                "authentication": {
                    "type": "phone",
                    "method": "sms",
                    "phone": "+1XXXXXXXXX",
                    "sms_message": "Custom test message with {password}"
                }
             }
       }

airSlate SignNow provides developers with complete SDKs for every popular language, allowing them to integrate eSignatures without writing a single line of code.
With airSlate SignNow’s detailed documentation, integrating electronic signatures with your app is a breeze.
airSlate SignNow goes beyond eSignatures. Use it to create fillable forms, request payments, and manage your documents securely using simple API calls.

View full API reference

Choose a signer authentication method that fits into your workflow

SMS verification

Send an SMS with a personalized message and unique password. Signers will be required to enter the password you shared with them via SMS to access the signing session inside your application.

Phone call verification

Provide a relevant phone number and your signer will receive a phone call prior to gaining access to an embedded signing session. The signer passes authentication once they pick up the phone call.

Password protection

Create a secret password for accessing an embedded signing session and share it discreetly with your signers. They will have to enter the password to complete the verification and access your document.

Enhance the security of your integrated signing experiences with two-factor authentication

Improved security & compliance

Confirm the identity of users before they can sign documents within your application. Reduce the risk of fraudulent activities and ensure your app complies with the highest data security regulations.

Personalized user experience

Customize the two-factor authentication process with personalized messages using the airSlate SignNow API. This not only adds an extra layer of security but also enhances the user experience by making the process more engaging and intuitive.

Easy and quick implementation

All you need to set up dual-factor authentication via the API is to add a few lines of code while configuring your embedded eSignature invite.

airSlate SignNow regularly wins awards for ease of use and setup

Read our reviews on the trusted resources

Tech Data uses airSlate SignNow to improve our internal and external customer service while increasing our speed to revenue.

Bob Dutkowsky | CEO

Select an API package for your business

Integrate eSignatures into your software and get 250 legally-binding signature invites with your API free trial.

Check API pricing

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#.

Enterprise-grade security and compliance

airSlate SignNow is committed to protecting your sensitive information by complying with global industry-specific security standards.

Learn more

GDPR compliance

Regulates the use and holding of personal data belonging to EU residents.

SOC 2 Type II Certified

Guarantees the security of your data & the privacy of your clients.

PCI DSS certification

Safeguards credit/debit card data for every monetary transaction a customer makes.

21 CFR Part 11

FDA-backed standards for electronic documentation and electronic signatures.

HIPAA compliance

Protects the private health information of your patients.

CCPA compliance

Enhances the protection of personal data and the privacy of California residents.

Watch the airSlate SignNow API in action

Evaluate airSlate SignNow's set up sms authentication using the api

The airSlate SignNow API equips organizations with a distinctive collection of features that facilitate more streamlined business workflows. Discover the advantages of our set up sms authentication using the api with a complimentary Sandbox account.

To set up a Sandbox account, follow these instructions:

Visit the airSlate SignNow Developers portal. Here, you will find additional information about the API and the option to register for your Sandbox account.
Register for a trial. Enter your email address and click the Create API sandbox button to sign up.
Validate your email address. Check your inbox for an email and follow the link to confirm your email address.
Access Developer Sandbox. Set a password to gain further entry to your developer account.
Incorporate an application. Click Add App, name your application, and click Add to save your changes. The API token for the application will be created automatically.
Evaluate set up sms authentication using the api. Investigate all airSlate SignNow features and how they can improve your business operations.

Complete these steps to assess airSlate SignNow's features. Should you have any inquiries, feel free to reach out to the support team. Enhance your business workflows with airSlate SignNow today.

How it works

Create an account and access the API Dashboard

Copy required code from the library to Customize an SMS
authentication message via the API

Track how your productivity grows with accelerated workflows

Start building your eSignature integration with a quick video guide

Watch the video tutorial to kick-start your project.

Trusted eSignature solution — what our customers are saying

Explore how the airSlate SignNow eSignature platform helps businesses succeed. Hear from real users and what they like most about electronic signing.

User Friendly

5

User in Retail

What do you like best?

I like it because it is easy to use and to upload documents. You can also customize the emails attached to the document being signed and send copies to individuals outside of the signing group. Overall its easy of use is above average and the price is affordable.

Read full review

airSlate SignNow is plug and play and very easy to use

5

Administrator in Banking

What do you like best?

The functionality. It's easy to set up and easy to use. This product provides us the ability to better serve our members.

Read full review

Simple, intuitive, and a real time-saver!

5

User in Computer Software

What do you like best?

airSlate SignNow saves my company time be allowing documents to be signed quickly rom any location on a mobile device or web browser. In addition, preparing documents for signatures is simple and it has nice workflow and audit trail features to help us track the status of documents out for signature.

Read full review