# Frontend APIs

The Frontend APIs expose the following HTTP APIs to request information from your frontend application and to insert information into your backend system.

- **Context**

  The [Context API](/frontend-api/context.md) returns information about the deployment environment and locales.

- **Page**

  The [Page API](/frontend-api/page.md) returns the page structure and data required for rendering the published page.

- **Page preview**

  The [Preview API](/frontend-api/preview.md) returns the page structure and data required for rendering a page preview.

- **Action**

  The [Action API](/frontend-api/action.md) executes an action extension and returns the response from the extension.

## Search

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## Navigation

- API fundamentals
  - [General concepts](/frontend-api/general.md)
  - [Type representations](/frontend-api/types.md)
- Environment and locales
  - [Context](/frontend-api/context.md)
- Page structure and data
  - [Page](/frontend-api/page.md)
  - [Preview](/frontend-api/preview.md)
- Calling actions
  - [Action](/frontend-api/action.md)