# Functions of API Calls

**URL:** https://community.deriv.com/t/functions-of-api-calls/88089
**Category:** Developers
**Tags:** api, developers, derivapi
**Created:** [April 22, 2025, 10:04am UTC](https://community.deriv.com/t/functions-of-api-calls/88089 "2025-04-22T10:04:19Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Faazil\_deriv](https://avatars.discourse-cdn.com/v4/letter/f/f6c823/32.png) [@Faazil\_deriv](https://community.deriv.com/u/Faazil_deriv)
#### Post date: [April 22, 2025, 10:04am UTC](https://community.deriv.com/t/functions-of-api-calls/88089/1 "2025-04-22T10:04:19Z")

</div>

Hi Deriv Community,

Understanding how to build and send calls is key to making the most of Deriv APIs.

Here’s what our latest guide covers:

🧩 How API call structures work  
🛠 The difference between required and optional fields  
💡 Real examples to help you get it right

Whether you’re retrieving user data or subscribing to a stream, this knowledge helps your app run smoothly.

📖 Read the guide: [Functions of API Calls](https://developers.deriv.com/docs/functions-of-api-calls)

💬 Share your tips or questions on API formatting below!