> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

## Resource: About OAuth Authentication

## Article: About OAuth Authentication

## Article Link: https://dev.wix.com/docs/go-headless/develop-your-project/self-managed-headless/authentication/oauth/about-oauth-authentication.md

## Article Content:

# About OAuth Authentication

> **Note:** In Wix-managed headless projects, OAuth is handled automatically. See [About Wix-managed headless](https://dev.wix.com/docs/go-headless/develop-your-project/wix-managed-headless/about-wix-managed-headless.md).

OAuth is the authentication protocol used for visitor and member authentication in headless projects. It allows your site or app to recognize individual visitors and members using tokens, enabling access to visitor-specific data like shopping carts, order history, and profile information.

For administrative operations like adding products or managing orders, use an [API key](https://dev.wix.com/docs/go-headless/get-started/setup/authentication/generate-an-api-key.md) instead.

## See also

- [Create a Client for Authentication with OAuth](https://dev.wix.com/docs/go-headless/develop-your-project/self-managed-headless/authentication/oauth/create-a-client-for-authentication-with-oauth.md)
- [Make REST API Calls Using OAuth](https://dev.wix.com/docs/go-headless/develop-your-project/self-managed-headless/authentication/oauth/make-rest-api-calls-using-oauth.md)