# How to make REST API calls using Leapwork?

Web services based on REST Architecture, commonly known as REST-ful Web Services use HTTP methods to implement the concept of REST architecture. It can be used in a variety of messaging systems and can be delivered via a variety of transport protocols. Leapwork supports making the REST request using the HTTP Request building block.

Users can perform operations to Create/Read/Update/Delete data (CRUD operations) using REST API methods viz. POST/GET/PUT/DELETE requests. To perform REST API calls, the following four things are required in Leapwork.

- **URL:** Provide the REST endpoint as the URL.

- **Headers:** The Request Header contains metadata for the HTTP Request message as key-value pairs. For example, client (or browser) type, format supported by the client, format of the message body, cache settings, etc.

- **Method:** The HTTP methods most commonly used in a REST based architecture are as below. Choose one from these:
  - **GET** − Provides read-only access to a resource.
  - **PUT** − Used to create a new resource.
  - **DELETE** − Used to remove a resource.
  - **POST** − Used to update an existing resource or create a new resource.

- **Body:** In the request body, Message content or Resource representation can be specified.

Please see below an example of an HTTP Request block with various fields populated.

You can download the [attached case](https://leapworkaps.file.force.com/sfc/dist/version/download/?oid=00D7Q000003Qjj6&ids=0687Q000004sAKH&d=%2Fa%2F7Q000000cA8m%2FAtxhU1iiOdWqw5dDI7FAkZ.hZsx0xPXY7mErhdaJMzY&asPdf=false) and try it out yourself by importing the case in Leapwork. Read here: [How to Export and Import test](https://support.leapwork.com/s/article/HowtoExportandImportautomationflows63307ce385193)

**For any clarification, please contact our [Priority Support](mailto:prioritysupport@leapwork.com).**

**Attachments:**

[Rest_API_Example.zip](https://leapworkaps.file.force.com/sfc/dist/version/download/?oid=00D7Q000003Qjj6&ids=0687Q000004sAKH&d=%2Fa%2F7Q000000cA8m%2FAtxhU1iiOdWqw5dDI7FAkZ.hZsx0xPXY7mErhdaJMzY&asPdf=false)