release: 0.57.0

[stainless-app]

Automated Release PR

0.57.0 (2026-05-26)

Full Changelog: v0.55.0...v0.57.0

Features

• [kernel-1116] browser events api integration (958614b)
• api: dual-route /projects under /org/projects, deprecate /projects (e333d62)
• api: type can_reauth_reason as an enum on ManagedAuth (be986fa)
• browsers: accept chrome_policy on POST /browsers (KERNEL-1216) (e3b32bb)
• EOL persistent browsers: openapi limits (4dced80)
• Expose POST /projects in public API (e251459)
• Support telemetry enabled request config (2aea49f)

Bug Fixes

• typescript: upgrade tsc-multi so that it works with Node 26 (46e3fb5)

Chores

• tests: remove redundant File import (1677dc1)

---

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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.

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---

Note

High Risk
Breaking changes include project endpoints moving to /org/projects and removal of persistent-browser delete/types; telemetry and auth enum changes affect many integrators on upgrade.

Overview
Release 0.57.0 bumps the package and OpenAPI metadata, and regenerates the client from the updated Kernel API spec.

The largest addition is client.browsers.telemetry.stream: a new SSE client for live browser telemetry (console, network, page lifecycle, interactions, monitor events) plus telemetry / chrome_policy on browser create and update. Persistent-browser support is removed from the public surface: BrowserPersistence, persistence fields, and the deprecated DELETE /browsers?persistent_id= helper are gone; project limits no longer expose max_persistent_sessions.

Projects CRUD and limits now call /org/projects (and /org/projects/{id}/limits) instead of /projects, which is a breaking URL change for anyone pinning old paths. Managed auth types can_reauth_reason as a fixed string union instead of a free-form string.

Smaller doc/type updates: clearer start_url semantics on sessions and pools, proxy check behavior when a custom url is supplied, and tsc-multi bumped for Node 26.

^{Reviewed by Cursor Bugbot for commit 1bf9326. Bugbot is set up for automated code reviews on this repo. Configure here.}

[firetiger-agent]

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[stainless-app]

🧪 Testing

To try out this version of the SDK:

npm install 'https://pkg.stainless.com/s/kernel-typescript/2aea49f341f7cc1a2f8e99a5112e831bbcfdcd4e/dist.tar.gz'

Expires at: Thu, 25 Jun 2026 17:45:55 GMT
Updated at: Tue, 26 May 2026 17:45:55 GMT

[stainless-app]

Release version edited manually

The Pull Request version has been manually set to 0.57.0 and will be used for the release.

If you instead want to use the version number 0.56.0 generated from conventional commits, just remove the label autorelease: custom version from this Pull Request.

[IlyaasK]

lgtm

[IlyaasK]

lgtm

[stainless-app]

🤖 Release is at https://github.com/kernel/kernel-node-sdk/releases/tag/v0.57.0 🌻