OpenAPI and Bruno
Bruno allows you to work with OpenAPI Specification (OAS) files in a number of ways:
- Creating a collection from an OAS file import
- Exporting a collection as an OAS file Premium
- Viewing and Designing an OAS file Premium
Creating a Collection from OAS Import
Bruno supports importing OAS V3 files only
- Select Import
- Choose OpenAPI V3 File
- Select the file stored on your machine
Exporting a Collection as an OAS File Premium

- Right-click on a collection and select Export
- Choose OpenAPI Specification
- Name your file and designate a location for it to be stored
Viewing and Designing an OAS file Premium

If you’ve saved or otherwise have an OAS file on your machine, you can view the OAS in a SwaggerUI-esque manner by:
- Selecting Open API Spec
- Choose the file name and location that you want to open
This will then open the spec in a separate section of your Bruno sidebar called APIs.
If you want to create an OAS file, you can:
-
Select Create API Spec
-
Designate whether you want to create a Blank Spec, or generate it from an existing Bruno Collection
- Choose a name and location for the spec to be saved under.
You will now have the scaffolding of an OAS that you can continue to design.