Add magic fields on a document to be eSigned with C# Client using the API

Add the option of finding text and signature fields automatically in a document using the airSlate SignNow API. Magic fields ensure that nothing important is missed when filling out a document.

  • Free to test
  • Fast to deploy
  • Powerful & secure

Make it easy for recipients to fill your document by detecting fillable fields.

Make workflow prompt and smooth by doing everything in one go with magic fields.

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  • 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.

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
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.

GDPR compliance
GDPR compliance
Regulates the use and holding of personal data belonging to EU residents.
SOC 2 Type II Certified
SOC 2 Type II Certified
Guarantees the security of your data & the privacy of your clients.
PCI DSS certification
PCI DSS certification
Safeguards credit/debit card data for every monetary transaction a customer makes.
21 CFR Part 11
21 CFR Part 11
FDA-backed standards for electronic documentation and electronic signatures.
HIPAA compliance
HIPAA compliance
Protects the private health information of your patients.
CCPA compliance
CCPA compliance
Enhances the protection of personal data and the privacy of California residents.

Watch the airSlate SignNow API in action

Examine airSlate SignNow's add magic fields with c client for api

The airSlate SignNow API provides organizations with a distinctive array of features that facilitate more effective business processes. Discover the benefits of our add magic fields with c client for api by creating a complimentary Sandbox account.

Complete the following steps to set up a Sandbox account:

  1. Visit the airSlate SignNow Developers portal. Here, you will find additional details about the API and the procedure to register for your Sandbox account.
  2. Register for a trial. Enter your email address and click the Generate API sandbox button to sign up.
  3. Verify your email address. Access the email you receive and follow the provided link to validate your email address.
  4. Access Developer Sandbox. Create a password to gain further entry to your developer account.
  5. Incorporate an application. Click Add App, assign a name to your app, and click Add to save changes. The API token for this app will be generated automatically.
  6. Utilize add magic fields with c client for api. Investigate all airSlate SignNow features and how they can improve your business operations.

Adhere to these steps to examine airSlate SignNow's functionalities. Feel free to reach out to the support team if you have any inquiries. Improve your business processes with airSlate SignNow today.

How it works

Create an account and access the API Dashboard
Copy required code from the library to add magic fields on a document to be eSigned with C# Client using the API
Track how your productivity grows with accelerated workflows

Watch our instructions to build custom integrations with ease

airSlate SignNow offers a free testing environment to explore the eSignature.

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.

Inexpensive and robust small business tool for signing documents electronically
5
Sean B

What do you like best?

I love the kiosk mode which includes the ability to create and use templated forms. Cloud sync so that we can download the contracts onto a desktop.

Read full review
Great Product!
5
Brendan P

What do you like best?

airSlate SignNow is very easy to use. Not only do I use it to sign all my documents, I even use it as a PDF editor as well.

Read full review
Easy to Use eSignature App for Small Business
5
Matt D

What do you like best?

I researched a few eSignature software apps and settled on airSlate SignNow a couple years ago. As CFO and head of business development, I use airSlate SignNow frequently for partnership agreements and shareholder docs. I like the uncluttered user interface, which makes using this product straightforward and fast. It also saves time to upload commonly used agreements as templates into airSlate SignNow. Adding additional users in our organization is easy and cost effective.

Read full review

Ready to get started?

FAQs

Below is a list of the most common airSlate SignNow API questions and answers. Just choose a question to view a detailed answer.

Need help? Contact support

Ready to get started?

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

Why choose the airSlate SignNow API?:

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