Add calculated fields to a document for signing using cURL

Add fields for calculation and apply addition, subtraction, multiplication, division and parentheses to values in the text of a document with the airSlate SignNow API. Automate these processes and effectively avoid mistakes.

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

Create and customize formulas for your business needs. Allow recipients to complete all required fields with ease and get automated results.

Ensure all calculations are completed accurately with automated processes using the airSlate SignNow API.

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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.

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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

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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

Get started with uninterrupted eSignature API: add calculated fields to a document for signing using cURL

Consolidate and streamline your eSignature workflows and establish seamless processes. Try the airSlate SignNow API, implement eSignature workflows into your custom apps and websites in minutes, and seamlessly add calculated fields to a document for signing using cURL.

Add calculated fields to a document for signing using cURL the airSlate SignNow API for uninterrupted eSignature API

  1. Click API on the airSlate SignNow main page and create your API Sandbox account.
  2. Open your email to confirm the registration and specify a password for accessing your Developer Sandbox environment.
  3. Find the list of your apps at the top of the page. By default, you can also find a Test App for testing the API.
  4. Click its name to access the Client ID and Basic Authorization Token.
  5. Launch the API using the information from the previous step.
  6. Use the code samples from the airSlate SignNow library.
  7. When you're ready to go live, go to your airSlate SignNow account and choose a subscription plan.
  8. If you can't find a subscription that suits your needs, contact the Sales team.
  9. Change the test URL in your requests to the production environment URL.
  10. Delight your customers and partners with a streamlined eSignature experience.

The airSlate SignNow API is straightforward to embed, test, and operate (no vendor involved). Get the ability to add calculated fields to a document for signing using cURL easily. Choose airSlate SignNow to get more streamlined eSignature workflows.

How it works

Create an account and access the API Dashboard
Copy required code from the library to add calculated fields to a document for signing using cURL
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.

airSlate SignNow Review
5
Verified User

It is being used across the whole organization. Anyone that needs a verified online signature has used airSlate SignNow. I have to use it with documents that I submit to the government. I don't have to scan a document that I signed but just use airSlate SignNow.

We are trying to go paperless in our office and this has allowed me to do that with the documents that I am responsible for. airSlate SignNow provides a time/date stamp which helps in record keeping. It is very easy to use!

I have only one use for airSlate SignNow and that is to create a PDF document that has my signature. I have not been disappointed with that use.

Read full review
A very worthy consideration for your electronic signature needs
5
Verified User

We use airSlate SignNow for engagement letters and other documents requiring client signatures. It allows our clients to electronically sign documents without coming into the office. They can sign from mobile phones, tablets or computers.

You can choose to password protect the esign request. You can choose to email a signed copy of the document once completed or withhold it if there's sensitive information that you don't want sent via email. Allows clients the ability to sign from almost any location and on any connected (data or wifi) device.

I've only reached out a few times to support but each time my issue / need was addressed promptly and thoroughly.

This works well for legal documents that don't require KBA. Great for virtual office solutions and for a rush signature request. I see this working well for CPA, attorney and insurance industries.

Read full review
airSlate SignNow for Savings
5
Verified User

airSlate SignNow is used within our agency in every department. We use it to send out our contracts, NDAs and releases to our clients. airSlate SignNow has solved the issue of getting paperwork returned and returned in a timely manner. Some of our NDAs require multiple signatures and airSlate SignNow makes that much easier to accomplish. We are able to upload multiple documents to our template file and send out the required document for signing quickly.

The ability to assign multiple signers to a single document is exceptional. airSlate SignNow allows you to edit a document you have already uploaded and save the edits as though they are part of the original document in your templates section. The history feature makes it easy to go back and see how many times a document has been viewed and the exact date and time the document was signed.

airSlate SignNow is well suited for companies that send documents often that need signatures. In my industry we send around 40 contracts a week. airSlate SignNow would not be appropriate for a company that sends an occasional document for a signature. airSlate SignNow is designed to handle many documents and storage of contracts.

Read full review

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FAQs

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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