You can...

- perform HTTP requests with any method, URL, body and custom headers.
- save favorite requests and organize them in collections.
- view a history of your requests, which includes the full request and response.

The add-on supports the following goodies:

- Create and save your authorization headers with Basic or OAuth2 authentication.
- Use placeholders in saved requests.
- Use shortcuts for the frequently used actions (try pressing "?" to see the available shortcuts for the current context).