Electronic Signature
Developers
Features
API for eSignature Solutions
Add smart fields on a document for signing using cURL

Add smart fields on a document for signing using cURL

Add smart fillable fields to your template using the airSlate SignNow API. Smart fields allow your customers to automatically pre-fill documents with information from a database and send them for signing in a click.

Free to test
Fast to deploy
Powerful & secure

Turn your documents into a template and add smart fillable fields right from your website or app.

Customize your fillable forms with smart fields using the powerful airSlate SignNow API.

Node.js

C#

Java

Python

cURL

Copy code

public abstract class FieldRequestBase
    {
        public abstract string type { get; }
        public bool required { get; set; }
        public string template_field_id { get; set; }
        public string role { get; set; }
        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
        public string name { get; set; }
        public int page_number { get; set; }
        public int x { get; set; }
        public int y { get; set; }
        public int width { get; set; }
        public int height { get; set; }
    }
    public class DocumentUpdateRequestModel
    {
        public List<FieldRequestBase> fields { get; private set; } = new List<FieldRequestBase>();
    }
    public class SignatureFieldRequest : FieldRequestBase
    {
        public override string type { get { return "signature"; } }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var accessToken = "Your ACCEES TOKEN";
            var apiBaseUrl = "airSlate SignNow API URL e.g.: https://api-eval.signnow.com";
            var documentId = "Your document ID";

if (response.StatusCode != HttpStatusCode.OK)
            {
                throw new Exception(response.Content);
            }
        }
    }

import signnow_python_sdk
from datetime import datetime

if __name__ == '__main__':
    signnow_python_sdk.Config(client_id="CLIENT_ID",
                              client_secret="CLIENT_SECRET",
                              environment="production")

# Enter your own credentials
    username = "USER_NAME"
    password = "USER_PASSWORD"
    template_id = "TEMPLATE_ID"

# Create access_token for the user
    access_token = signnow_python_sdk.OAuth2.request_token(username, password, '*')

# Create the PUT /document payload
    doc_payload = {
        "texts": [
            {
                "size": 22,
                "x": 61,
                "y": 72,
                "page_number": 0,
                "font": "Arial",
                "data": "a sample text element",
                "line_height": 9.075,
                "client_timestamp": datetime.now().strftime("%s")
            }
        ],
        "fields": [
            {
                "x": 61,
                "y": 100,
                "width": 120,
                "height": 34,
                "page_number": 0,
                "role": "Signer 1",
                "required": True,
                "type": "signature"
            },
            {
                "x": 61,
                "y": 160,
                "width": 120,
                "height": 12,
                "page_number": 0,
                "label": "New Label",
                "role": "Signer 1",
                "required": True,
                "type": "text"
            },
            {
                "x": 61,
                "y": 178,
                "width": 41,
                "height": 26,
                "page_number": 0,
                "role": "Signer 2",
                "required": True,
                "type": "initials"
            }
        ]
    }

# Update document template with payload
    put_doc_response = signnow_python_sdk.Template.update(access_token['access_token'], template_id, doc_payload)

We provide developers with complete SDKs for all popular languages, allowing them to integrate eSignature workflows without writing a single line of code.
With our detailed documentation, integrating the airSlate SignNow API is a breeze.
The airSlate SignNow API not only provides you with eSignatures: use it to create fillable forms, request payments, and download & archive documents using simple API calls.

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Review airSlate SignNow’s API documentation

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

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Start with any of our SDKs

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

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

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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 add smart fields using curl

The airSlate SignNow API equips businesses with an exceptional array of functionalities that foster enhanced operational workflows. Discover the advantages of our add smart fields using curl with a complimentary Sandbox account.

Perform these actions to establish a Sandbox account:

Access the airSlate SignNow Developers portal. There you can uncover further information about the API and set up your Sandbox account.
Register for a trial. Enter your email address and click the Create API sandbox button to sign up.
Verify your email address. Open the email you receive and follow the link to authenticate your email address.
Navigate to Developer Sandbox. Generate a password to facilitate ongoing access to your developer account.
Incorporate an application. Click Add App, designate a name for your app, and click Add to save changes. The API token for the application will be generated automatically.
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Complete these steps to assess airSlate SignNow's functionalities. Should you have any inquiries, feel free to reach out to the support team. Optimize your business workflows with airSlate SignNow today.

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Create an account and access the API Dashboard

Copy required code from the library to add smart fields on a document for signing using cURL

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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.

Time saver for my business

5

User in Banking

What do you like best?

Easy to use and turn around times are great. I can get my client's signatures on documents in a matter of minutes. Previously to using airSlate SignNow, I had to wait for the clients to print out documents to sign and scan back to me. This was an issue because not everyone has a printer at home. airSlate SignNow has eliminated that issue. The time savings and turnaround time are by far the best feature. It's super easy to learn and use airSlate SignNow. I love how I can make templates and just make a copy for quick reference

Read full review

Perfect for Case Management

5

User in Mental Health Care

What do you like best?

User friendly on our end and also to consumer

Read full review

airSlate SignNow is the best!!

5

User in Religious Institutions

What do you like best?

The ability to send to multiple people is a specific signing order