---
updatedAt: 2025-06-12T00:20:29.000Z
agentTools:
  projectIndex: https://api-documentation.versium.com/llms.txt
---

# Make Your First API Call

At the most basic level, you call the Versium REACH APIs through HTTPs.  Below is the format of the API and a sample call that searches for a phone number, and only returns records that contain a deliverable email and address.

<Image title="API_Anatomy_Generic.JPG" alt={880} src="https://files.readme.io/888b021-API_Anatomy_Generic.JPG">
  Anatomy of an API
</Image>

For case-sensitivity rules, see [API Case Sensitivity](https://api-documentation.versium.com/reference/api-case-sensitivity).

## API Response

Here's what the response from the API looks like.

<Image title="API_Responses.JPG" alt={817} src="https://files.readme.io/df024f9-API_Responses.JPG">
  API Responses
</Image>

## What's Next

You may also want to check out:

* [Build Your Own API Call](https://api-documentation.versium.com/reference/build-your-own-api-call)
* [Interpreting the API results](https://api-documentation.versium.com/reference/interpreting-the-api-results)
* [API Walkthroughs](https://api-documentation.versium.com/docs/api_walkthroughs)