# Overview ### Overview The Violet API is organized around the [REST](http://en.wikipedia.org/wiki/Representational_State_Transfer) protocol. Using our API, you'll be able to perform a variety of operations, such as performing Checkout or Bi-directional Data Transfers across a multitude of E-commerce platforms. ### Key Sections * [**Login**](/api-reference/auth/login.md) – Login and Auth capabilities powered by Violet * [**Catalog**](/api-reference/catalog/offers.md) – Easily access Catalog data for all your connected merchants * [**Orders and Checkout**](/api-reference/orders-and-checkout/carts.md) – Power multi-merchant Checkout through Violet * [**Merchants**](/api-reference/merchants/merchant.md) – Access information about your connected merchants * [**Events**](/api-reference/events/webhooks.md) – Track the lifecycle of Orders and Checkout through events * [**Operations**](/api-reference/operations/connection.md) – Understand the health of merchants connected to your platform #### OpenAPI Files The [Violet OpenAPI](https://github.com/violetio/open-api.git) files are available on GitHub. These files describe the APIs Violet exposes in a standardized way suitable for usage with tools for testing, client library generation, and other purposes that ingest OpenAPI/Swagger definition files. By default, Violet generates open-api-3 spec files. #### A Note About Null Values As a general rule, values that are null will not be included in the response object. So if a property listed in the spec is not being returned by the API it is usually because that property is null for the returned object. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.violet.io/api-reference/readme.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.