> Portal Navigation:
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## Resource: About Backend APIs

## Article: About Backend APIs

## Article Link: https://dev.wix.com/docs/wix-cli/guides/extensions/backend-extensions/api/about-backend-apis.md

## Article Content:

# About Backend APIs

Backend APIs expose server-side logic that your project's frontend extensions can call, such as a dashboard page, site widget, or other extension UI. You build them using [HTTP endpoints](https://dev.wix.com/docs/wix-cli/guides/development/http-endpoints/about-http-endpoints.md).

> **Note:** HTTP endpoints replace [HTTP functions](https://dev.wix.com/docs/wix-cli/legacy/wix-cli-for-apps/supported-extensions/backend-extensions/api/http-functions/add-http-function-extensions-with-the-cli.md) from the legacy Wix CLI for Apps. See the [Migration Guide](https://dev.wix.com/docs/wix-cli/guides/development/http-endpoints/migration-guide.md).

## How it works

HTTP endpoints are files you place in `src/pages/api/` that handle incoming requests. Under the hood they're powered by Astro endpoints, so they're auto-discovered from the filesystem rather than registered like typical extensions.

<blockquote classname="caution">

**Caution:** Because of this, and unlike HTTP functions in the legacy Wix CLI for Apps, HTTP endpoints aren't traditional extensions:

- They aren't generated by `npm run generate`.
- They aren't registered in [`src/extensions.ts`](https://dev.wix.com/docs/wix-cli/guides/extensions/about-the-extensions-ts-file.md).
- They don't appear on the **Extensions** page in the app dashboard.

</blockquote>

## See also

- [Add HTTP Endpoints to Your Project](https://dev.wix.com/docs/wix-cli/guides/development/http-endpoints/add-http-endpoints-to-your-project.md).
- [Migration Guide](https://dev.wix.com/docs/wix-cli/guides/development/http-endpoints/migration-guide.md).