---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/usage/api#article
headline: Twilio API overview
description: Learn how to authenticate your requests to the Twilio APIs, what content type to use for API requests, and how the Twilio APIs handle webhooks.
url: https://www.twilio.com/docs/usage/api
inLanguage: en
dateModified: 2026-07-10T14:21:12.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# Twilio API overview

The Twilio [APIs](/docs/glossary/what-is-an-api) are organized around [REST](/docs/glossary/what-is-a-rest-api). Behind these APIs is a software layer connecting and optimizing communications networks around the world. With the Twilio APIs, you can build applications that help your users send messages, make phone calls, look up phone numbers, and more.

In Twilio's ecosystem, each product corresponds to an API. For example, Twilio Messaging corresponds to the Messaging API. Although each API has its own unique features, they all share a common set of principles and practices. This consistency lets you work with different Twilio APIs in a similar way. You can use the APIs directly over HTTPS or through [Twilio SDKs](/docs/libraries) available for several programming languages.

This section covers how to work with the Twilio APIs:

* [Make requests to the Twilio APIs](/docs/usage/requests-to-twilio), including authenticating your requests, choosing the right content type, and handling webhooks.
* [Work with Twilio API responses](/docs/usage/twilios-response), including specifying response formats, paginating results, and handling errors.
* [Handle mutations and conflicts](/docs/usage/mutation-and-conflict-resolution).
* [Follow API best practices](/docs/usage/rest-api-best-practices).