Beta Release: Mock Server in Bruno - Feedback wanted!

[naman-bruno]

Hi everyone 👋

We're excited to share that Mock Server is coming to Bruno (beta) in version 4.1.0! 🎉
It's not in a stable release yet, you can try it today from the nightly builds and we'd love your feedback to help us refine and improve the experience before it ships.

Spin up a local server that serves mock responses from your collection - so you can build against your API before the backend is ready, reproduce edge cases on demand, and share stable examples with your team.

👉 In this discussion, you can:

• Share your first impressions of Mock Server
• Report any issues, bugs, or unexpected behavior
• Suggest improvements or features that would make your mocking workflows better
• Let us know how you're currently mocking APIs in your projects

What you can do today:

• Create a mock server from a collection, an OpenAPI spec, or standalone
• Define multiple mock responses per route with status, headers, and body
• Match requests using rules on headers, query, and body
• Configure port and response delay per server
• Try responses inline and inspect the live request log

Note

You need to navigate to Preferences > Beta and enable the Mock Server toggle to activate it.

📹 We've also added a short screen recording below to walk you through the current functionality.

Screen.Recording.2026-08-19.at.6.29.26.PM.mov

🔗 Helpful links:

• Download the nightly build

⚠️ Since this is a beta feature, you may run into limitations or rough edges, your feedback will directly shape how we improve it.

Looking forward to hearing your thoughts and ideas! 💬

Thanks for helping us make Bruno better,
The Bruno Team ❤️

[JorgeTrovisco]

Thank you for bringing Mock Servers to Bruno, a great addition to the tool.

Quick question, is there, or is there a plan for, a passthrough/proxy fallback for unmatched requests? My use case is mocking some endpoints while everything else forwards to the real backend, instead of getting a 404.

Thanks for the work on this feature!

[RomanMasseBylaw]

Great ! would be nice to have it runnable through cli also, any plan on this ?
Keep going and thanks for the feature 👍

[RikkiMasters]

Will this be available in the free version, or paid plans only?