release: 0.42.1

[stainless-app]

Automated Release PR

0.42.1 (2026-03-05)

Full Changelog: v0.42.0...v0.42.1

Features

• [kernel-1028] add api clipboard support (077a61c)
• add force flag to viewport resize to bypass live view/recording check (c4b8c62)
• expose smooth mouse movement via public API (8b3db28)

Chores

• internal: codegen related update (e9265c4)

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The semver version number is based on included commit messages. Alternatively, you can manually set the version number in the title of this pull request.

For a better experience, it is recommended to use either rebase-merge or squash-merge when merging this pull request.

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Note

Medium Risk
Adds new browser-control capabilities (clipboard read/write, smooth mouse movement) and extends browsers.update viewport parameters with a force flag, which could affect client-side typing/behavior for callers relying on the previous shape.

Overview
Release 0.42.1 updates the SDK API surface for browser session control. It adds client.browsers.computer.read_clipboard/write_clipboard plus new request/response types for clipboard text.

It extends mouse movement to support smooth, human-like motion via new smooth and duration_ms parameters (including batch action typing), and augments browser viewport updates with a viewport.force flag to allow resizing even during live view/recording.

Also includes codegen/documentation polish (resource/property docstrings, api.md updates), test updates for the new methods/params, and standard version/changelog metadata bumps.

^{Written by Cursor Bugbot for commit 474dcda. This will update automatically on new commits. Configure here.}

[stainless-app]

🧪 Testing

To try out this version of the SDK:

pip install 'https://pkg.stainless.com/s/kernel-python/c4b8c62622354859847c13234ee9f54611f4175f/kernel-0.42.0-py3-none-any.whl'

Expires at: Sat, 04 Apr 2026 15:43:40 GMT
Updated at: Thu, 05 Mar 2026 15:43:40 GMT

[stainless-app]

Release version edited manually

The Pull Request version has been manually set to 0.42.1 and will be used for the release.

If you instead want to use the version number 0.43.0 generated from conventional commits, just remove the label autorelease: custom version from this Pull Request.

[stainless-app]

🤖 Release is at https://github.com/kernel/kernel-python-sdk/releases/tag/v0.42.1 🌻