Bruno, a popular open-source API client, released v3.3.0 on April 22, 2026, building upon the capabilities discussed in our bruno-api-client article. This minor update focuses on expanding protocol support, enhancing UI/UX, and improving developer experience.

Key Changes

New Features:

  • Expanded Protocol & Auth: Significant additions include gRPC proxy support, OAuth 1.0 authentication, and a dedicated GraphQL query builder. These features broaden the scope of APIs QA engineers can effectively test. PAC file upload is also now supported.
  • UI/UX Enhancements: The Runner UI has been revamped with new Timings and Filters sections, offering clearer insights into test execution. Users can now customize keybindings, and window frames/widths persist across sessions.
  • Developer & QA Workflow: Direct cookie access methods, basic annotation syntax, and enhanced ScriptError provide more control for scripting. There’s also support for UUID v7 in pre-request scripts and improved environment variable validation.
  • Integrations & Management: New capabilities include GitHub search and import for collections, refined Git UI controls for free users, and a beta feedback feature for OpenAPI Sync. Proxy and SSL certificate support for AWS, Azure, and Vault Cloud secret managers enhance security.

Fixes: Several issues were addressed, including a fix for process.env variable resolution in global environments, proper storage of __Host- prefixed cookies, and improved handling of SSE connections. The isJson assertion now correctly accepts arrays as valid JSON, and copy/paste functionality for requests and JS files has been stabilized.

For a full list of changes, refer to the official Bruno v3.3.0 release notes.

Impact for QA Teams

This update significantly empowers QA teams by extending Bruno’s capabilities to more complex API architectures like gRPC and OAuth 1.0. The improved Runner UI and GraphQL builder streamline testing workflows, allowing engineers to diagnose issues faster and cover a wider range of API scenarios with greater efficiency.