# Bruno: what changed from 3 to 4

- Product: Bruno (https://whatsnew.fyi/product/bruno)
- Vendor: Bruno
- Range: changelog entries numbered after v3.5.3 up to and including v4.1.0, stable releases only
- Entries below: 2 releases (newest first)
- Resolved: 3 is v3.5.3 and 4 is v4.1.0, the newest stable release of each major we track
- Carrying security changes: 0 · CVEs mentioned: 0 · Mentioning breaking changes: 0 · Removing or deprecating something: 0
- Page: https://whatsnew.fyi/product/bruno/compare/3...4

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## What changed (54 changes, grouped by kind)

### Added

#### v4.1.0 (2026-08-20)

- Mock Server implementation
- Rich text docs editor
- Add --global-env-var flag to override global environment variables at runtime in CLI
- Global client certs and ability to disable individual client certs
- Handle authorization header leaks to third party servers on redirect
- Search filter to environment selector dropdown
- Default env to presets
- Support drag-and-drop and alphabetical sorting for variables
- Sorting to the secrets tab
- Open multiple collections from a monorepo
- Description text to open collection selection modal
- GCP Secret Manager support
- Git remote operation modals and enhanced branch selection UI
- Git proxy environment configuration
- Network config for git provider APIs
- Inform user when edits are being made on protected branches
- Warning about unsynced collections excluded from Fetch in Bruno embed
- Report app version, OS, arch and telemetry id on licence calls

#### v4.0.0 (2026-07-23)

- Migrate ctx API to bru.ctx
- Show human-readable size for unloaded requests in overview
- File binary description implementation
- AI model handling with reasoning support
- Variable descriptions
- Active workspace tab type tracking
- Option to edit bruno version in collection overview
- Akamai auth integration
- Security preferences management to AI settings
- Collection name to generate doc modal with minor UI changes
- Persist env, global-env, and collection variable changes from scripts in CLI
- Set yml as default file format across all types of imports
- Pkg configuration for installation location in Electron
- Persist scripted variable changes by default and re-enable disabled scripting APIs
- AI mode toggle UI and add AI support for folder and collection
- Split variables and secrets into separate tabs in environments
- AI chat sidebar with code block and diff view components
- OpenAI-compatible endpoints support for AI
- WOOF easter egg
- App functionality
- Resizable columns in network panel

### Changed

#### v4.1.0 (2026-08-20)

- Updated presets design
- Updated dropdown with menu dropdown and label weight UX changes

### Fixed

#### v4.1.0 (2026-08-20)

- Stop AWS V4 auth headers from leaking on cross-origin redirects
- Block duplicate secret names to prevent value loss
- Global environment variables for apps
- Re-add new request shortcut
- Stopped the same collection from rendering twice with conflicting status
- Show only the remove option for the failed collection in workspace overview
- Notify about collections that fail to open in workspace
- Switch to default workspace on close so header shows correct name
- Fixed search and replace input border in editor
- Tab indentation on code blocks
- Add guessed language in language dropdown picker
- Allow app keybindings if that keybinding is not present in rich text editor
- Warn when binary body file is missing on disk

## Release notes

### v4.1.0

- Date: 2026-08-20
- Version: v4.1.0
- Original notes: https://github.com/usebruno/bruno/releases/tag/v4.1.0
- Permalink: https://whatsnew.fyi/product/bruno/releases/v4.1.0

- **added** — Mock Server implementation
- **added** — Rich text docs editor
- **added** — Add --global-env-var flag to override global environment variables at runtime in CLI
- **added** — Global client certs and ability to disable individual client certs
- **added** — Handle authorization header leaks to third party servers on redirect
- **added** — Search filter to environment selector dropdown
- **added** — Default env to presets
- **added** — Support drag-and-drop and alphabetical sorting for variables
- **added** — Sorting to the secrets tab
- **added** — Open multiple collections from a monorepo
- **added** — Description text to open collection selection modal
- **added** — GCP Secret Manager support
- **added** — Git remote operation modals and enhanced branch selection UI
- **added** — Git proxy environment configuration
- **added** — Network config for git provider APIs
- **added** — Inform user when edits are being made on protected branches
- **added** — Warning about unsynced collections excluded from Fetch in Bruno embed
- **added** — Report app version, OS, arch and telemetry id on licence calls
- **changed** — Updated presets design
- **changed** — Updated dropdown with menu dropdown and label weight UX changes
- **fixed** — Stop AWS V4 auth headers from leaking on cross-origin redirects
- **fixed** — Block duplicate secret names to prevent value loss
- **fixed** — Global environment variables for apps
- **fixed** — Re-add new request shortcut
- **fixed** — Stopped the same collection from rendering twice with conflicting status
- **fixed** — Show only the remove option for the failed collection in workspace overview
- **fixed** — Notify about collections that fail to open in workspace
- **fixed** — Switch to default workspace on close so header shows correct name
- **fixed** — Fixed search and replace input border in editor
- **fixed** — Tab indentation on code blocks
- **fixed** — Add guessed language in language dropdown picker
- **fixed** — Allow app keybindings if that keybinding is not present in rich text editor
- **fixed** — Warn when binary body file is missing on disk

#### Changelog

###### Features
- feat: Mock Server implementation by @utkarsh-bruno and @shubh-bruno in [#8734](https://github.com/usebruno/bruno/pull/8734)
- feat(docs): Rich text docs editor by @Gopi-bruno in [#8559](https://github.com/usebruno/bruno/pull/8559)
- feat(cli): add --global-env-var to override global environment variables at runtime by @abhishekp-bruno in [#8620](https://github.com/usebruno/bruno/pull/8620)
- feat(client certs): add global client certs and allow disabling individual client certs. by @morsh-bruno in [#8751](https://github.com/usebruno/bruno/pull/8751)
- feat(auth-headers): handling authorization header leaks to third party servers on redirect by @Gopi-bruno in [#8380](https://github.com/usebruno/bruno/pull/8380)
- feat(envs): adding search filter to environment selector dropdown by @Gopi-bruno in [#8277](https://github.com/usebruno/bruno/pull/8277)
- feat(environment): add default env to presets by @sachin-thakur-bruno in [#8612](https://github.com/usebruno/bruno/pull/8612)
- feat: support drag-and-drop and alphabetical sorting for variables by @adwait-bruno in [#8603](https://github.com/usebruno/bruno/pull/8603)
- feat: add sorting to the secrets tab as well by @adwait-bruno in [#8871](https://github.com/usebruno/bruno/pull/8871)
- feat(collections): open multiple collections from a monorepo by @gopu-bruno in [#8724](https://github.com/usebruno/bruno/pull/8724)
- feat(collections): add description text to open collection selection modal by @gopu-bruno in [#8793](https://github.com/usebruno/bruno/pull/8793)
- feat(presets): updated presets design by @sachin-thakur-bruno in [#8828](https://github.com/usebruno/bruno/pull/8828)
- feat(presets): updated dropdown with menu dropdown and label weight ux changes by @sachin-thakur-bruno in [#8841](https://github.com/usebruno/bruno/pull/8841)
- feat(migrate): enhance migration modal to handle collection drafts by @naman-bruno in [#8899](https://github.com/usebruno/bruno/pull/8899)
- feat: add migrate-to-YML pill to collection header by @naman-bruno in [#8882](https://github.com/usebruno/bruno/pull/8882)
- feat(converters): add support for script execution flow in yml configuration by @naman-bruno in [#8745](https://github.com/usebruno/bruno/pull/8745)
- feat: add preserve scripts option for Postman import/export by @gopu-bruno in [#8726](https://github.com/usebruno/bruno/pull/8726)
- feat(snapshot): persisting sidebar state in the snapshot by @Gopi-bruno in [#8328](https://github.com/usebruno/bruno/pull/8328)
- feat(code-mirror-search): add replace and replace-all with search position, debouncing and tests by @sachin-thakur-bruno in [#8715](https://github.com/usebruno/bruno/pull/8715)
- feat(db): sqlite as a re-usable SDK for secondary queries by @chirag-bruno in [#8533](https://github.com/usebruno/bruno/pull/8533)
- feat(request): warn when binary body file is missing on disk by @sanish-bruno and @rajashreehj-bruno in [#8753](https://github.com/usebruno/bruno/pull/8753)
- feat(size/M): Default to no environments selected in the Generate Documentation modal by @sachin-bruno in [#8785](https://github.com/usebruno/bruno/pull/8785)
- feat(ai): add focus for prompt input after AI response completion by @naman-bruno in [#8747](https://github.com/usebruno/bruno/pull/8747)
- feat(secrets): add GCP Secret Manager support by @abhishekp-bruno
- feat(git): implement Git remote operation modals and enhance branch selection UI by @utkarsh-bruno
- feat(proxy): implement Git proxy environment configuration by @utkarsh-bruno
- feat(git-providers): apply network config for git provider APIs by @gopu-bruno
- feat(app/git): inform the user that edits are being made on protected branches by @sid-bruno
- feat(workspace): warning about unsynced collections excluded from Fetch in Bruno embed by @ravindra-bruno
- feat(license): report app version, OS, arch and telemetry id on licence calls by @hassan-bruno

###### Fixes
- fix(auth): stop AWS V4

_[Truncated at 4000 characters — full notes: https://github.com/usebruno/bruno/releases/tag/v4.1.0]_

### v4.0.0

- Date: 2026-07-23
- Version: v4.0.0
- Original notes: https://github.com/usebruno/bruno/releases/tag/v4.0.0
- Permalink: https://whatsnew.fyi/product/bruno/releases/v4.0.0

- **added** — Migrate ctx API to bru.ctx
- **added** — Show human-readable size for unloaded requests in overview
- **added** — File binary description implementation
- **added** — AI model handling with reasoning support
- **added** — Variable descriptions
- **added** — Active workspace tab type tracking
- **added** — Option to edit bruno version in collection overview
- **added** — Akamai auth integration
- **added** — Security preferences management to AI settings
- **added** — Collection name to generate doc modal with minor UI changes
- **added** — Persist env, global-env, and collection variable changes from scripts in CLI
- **added** — Set yml as default file format across all types of imports
- **added** — Pkg configuration for installation location in Electron
- **added** — Persist scripted variable changes by default and re-enable disabled scripting APIs
- **added** — AI mode toggle UI and add AI support for folder and collection
- **added** — Split variables and secrets into separate tabs in environments
- **added** — AI chat sidebar with code block and diff view components
- **added** — OpenAI-compatible endpoints support for AI
- **added** — WOOF easter egg
- **added** — App functionality
- **added** — Resizable columns in network panel

#### Changelog

###### Features
- feat(app): migrate ctx API to bru.ctx by @gopu-bruno in [#8557](https://github.com/usebruno/bruno/pull/8557)
- feat(overview): show human-readable size for unloaded requests by @chirag-bruno in [#8580](https://github.com/usebruno/bruno/pull/8580)
- feat(description): file binary description implementation by @sid-bruno in [#8434](https://github.com/usebruno/bruno/pull/8434)
- feat(ai): AI model handling with reasoning support by @naman-bruno in [#8539](https://github.com/usebruno/bruno/pull/8539)
- feat: variable descriptions by @sid-bruno in [#8269](https://github.com/usebruno/bruno/pull/8269)
- feat(snapshot): implement active workspace tab type tracking by @sid-bruno in [#8487](https://github.com/usebruno/bruno/pull/8487)
- feat: Added the option for bruno version edit in the collection overview by @sachin-bruno in [#8424](https://github.com/usebruno/bruno/pull/8424)
- feat(auth): akamai auth integration by @shubh-bruno in [#8199](https://github.com/usebruno/bruno/pull/8199)
- feat(ai): add security preferences management to AI settings by @naman-bruno in [#8453](https://github.com/usebruno/bruno/pull/8453)
- feat: Added collection name and minor UI changes to the generate doc modal by @sachin-bruno in [#8391](https://github.com/usebruno/bruno/pull/8391)
- feat(cli): persist env, global-env, and collection var changes from scripts by @sanish-bruno in [#8387](https://github.com/usebruno/bruno/pull/8387)
- feat(import): set yml as a default file format across all types of imports by @sharan-bruno in [#8363](https://github.com/usebruno/bruno/pull/8363)
- feat(electron): add pkg configuration for installation location by @sid-bruno in [#8403](https://github.com/usebruno/bruno/pull/8403)
- feat(variables): persist scripted variable changes by default and re-enable disabled scripting APIs by @sanish-bruno in [#8315](https://github.com/usebruno/bruno/pull/8315)
- feat(ai): mode toggle UI and add AI support for folder & collection by @naman-bruno in [#8385](https://github.com/usebruno/bruno/pull/8385)
- feat(environments): split variables and secrets into separate tabs by @pooja-bruno in [#8191](https://github.com/usebruno/bruno/pull/8191)
- feat(ai): add AI chat sidebar with code block and diff view components by @naman-bruno in [#8358](https://github.com/usebruno/bruno/pull/8358)
- feat(ai): OpenAI-compatible endpoints support by @naman-bruno in [#8365](https://github.com/usebruno/bruno/pull/8365)
- feat(woof): add WOOF easter egg by @sanish-bruno in [#8301](https://github.com/usebruno/bruno/pull/8301)
- feat(app): introduce app functionality by @naman-bruno in [#8338](https://github.com/usebruno/bruno/pull/8338)
- feat(network-ui): added resizable columns in network panel by @sachin-thakur-bruno in [#8265](https://github.com/usebruno/bruno/pull/8265)
- feat: integrate Markdown into NotificationDetail by @naman-bruno in [#8335](https://github.com/usebruno/bruno/pull/8335)
- feat(ai): implement AI autocomplete by @naman-bruno in [#8300](https://github.com/usebruno/bruno/pull/8300)
- feat: add cli offline bundle script by @sid-bruno in [#8192](https://github.com/usebruno/bruno/pull/8192)
- feat: faster collection mount via file cache (Beta) by @chirag-bruno in [#8222](https://github.com/usebruno/bruno/pull/8222)
- feat(ai-assist): add docs generation with folder and collection context by @utkarsh-bruno and @ravindra-bruno in [#8246](https://github.com/usebruno/bruno/pull/8246)
- feat: Choose environments to include and show versions in the Generate Documentation modal by @sachin-bruno in [#8268](https://github.com/usebruno/bruno/pull/8268)
- feat: variable `data types` support by @lohit-bruno in [#8046](https://github.com/usebruno/bruno/pull/8046)
- feat: redesign notification modal by @prateek-bruno in [#8140](https://github.com/usebruno/bruno/pull/8140)
- feat(websocket): show full message name in a tooltip on hover by @pooja-bruno in [#8299](https://github.com/use

_[Truncated at 4000 characters — full notes: https://github.com/usebruno/bruno/releases/tag/v4.0.0]_