Composing API Requests

The Composer in Fiddler Everywhere allows you to create requests to REST and SOAP API endpoints. Requests to local and online APIs enable you to check and debug various endpoints, inspect and analyze requests and responses, and quickly retrieve and receive data. To load the Composer:

1. Start Fiddler Everywhere and open the Home Pane.

2. Follow the Composer flow from the Compose API Request section.

OR

1. Start Fiddler Everywhere and open the Composer pane.

As a result, Fiddler loads the Composer screen where you can compose and execute HTTP requests and organize them in collections through the Requests tree.

Compose API Request

1. Use the + button to create a new Composer tab. Alternatively, you can directly use the main Composer tab.

2. Select HTTP method and enter the endpoint URL.

   

3. Select the HTTP protocol version with the drop-down menu to the left of the Execute button.

   

4. (Optional) Enter additional headers, parameters, and body if required. For example, common scenarios are to enter an authorization header, a Content-type header, or custom body data. Note that the request execution includes only checked headers.

   By default, the Fiddler Everywhere client will add a User-Agent header with the Fiddler Everywhere value. This header lets servers and network peers identify the application, the operating system, the vendor, or the version of the requesting user agent.

5. Click Execute to send the composed API request.

Once the API request executes, you can inspect its HTTP Response in the Composer's Response inspector tab. Like the inspectors in the Traffic pane, the Response inspector provides multiple views such as Headers, Raw, JSON, and so on.

Edit Captured API Request

1. Start Fiddler Everywhere and open the Traffic pane.

2. Capture a session (or open a session from the saved save Sessions tree) and use the Edit in Composer option from the context menu.

As a result, the session loads as an HTTP Request in the Fiddler's Composer, where you can make atomic modifications to its structure.

Save API Request

You can save the API request through the following steps.

• Open the Composer pane.

• Compose your API request

• Click the Save button.

Saved requests are loaded as a collection in the Requests list and can be reused or shared with collaborators at any later moment.

Share Requests Collection

With Fiddler Everywhere, you can quickly share a collection of saved API requests.

• Open the Request list.

• Select a collection of saved API requests.

• Use the context menu to share the collection with collaborators.

Save API Request

You can save the API request through the following steps.

• Open the Composer pane.

• Compose your API request

• Click the Save button.

Saved requests are loaded as a collection in the Requests list and can be reused or shared with collaborators at any later moment.

Share Requests Collection

With Fiddler Everywhere, you can quickly share a collection of saved API requests.

• Open the Request list.

• Select a collection of saved API requests.

• Use the context menu to share the collection with collaborators.

Learn more about the Requests collection here...