release: 0.43.0

[stainless-app]

Automated Release PR

0.43.0 (2026-03-10)

Full Changelog: v0.42.1...v0.43.0

Features

• Add webdriver_ws_url and metro webdriver session proxy (cff6562)

Bug Fixes

• client: preserve URL params already embedded in path (d7ab66f)

Chores

• ci: skip uploading artifacts on stainless-internal branches (2e40c24)
• internal: codegen related update (1185eae)
• internal: update dependencies to address dependabot vulnerabilities (51c1411)
• update placeholder string (7608d8b)

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Note

Medium Risk
Medium risk because it changes core HTTP client URL/query merging and retry backoff behavior, which can affect request correctness and rate-limit handling. Other changes are mostly release/version bumps and CI/dependency hygiene.

Overview
Bumps the SDK to 0.43.0 (manifest, package.json, lockfiles, src/version.ts, changelog) and updates the pinned OpenAPI spec metadata.

API surface: browser session-related responses now include webdriver_ws_url across browsers, browser pools, and invocation browser listings.

Client behavior: buildURL now preserves query params embedded in the provided path by merging url.searchParams with defaultQuery and per-request query, and retry handling now always honors server-provided retry-after/retry-after-ms delays instead of falling back when the delay is “too large.”

Ops/deps: CI artifact upload (OIDC + tarball) is skipped on stl/* branches, and minimatch is force-upgraded via overrides/resolutions (reflected in yarn.lock).

^{Written by Cursor Bugbot for commit 8893279. This will update automatically on new commits. Configure here.}

[stainless-app]

🧪 Testing

To try out this version of the SDK:

npm install 'https://pkg.stainless.com/s/kernel-typescript/cff6562f4488fd3dd4131f8bdac10ccb81173f43/dist.tar.gz'

Expires at: Thu, 09 Apr 2026 16:07:02 GMT
Updated at: Tue, 10 Mar 2026 16:07:02 GMT

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

[cursor]

Missing validation allows NaN/negative retry timeouts

Medium Severity

The old guard !(timeoutMillis && 0 <= timeoutMillis && timeoutMillis < 60 * 1000) validated that timeoutMillis was a positive, finite, reasonable number. The new check timeoutMillis === undefined only catches the undefined case. When Date.parse(retryAfterHeader) fails on an invalid date string, timeoutMillis becomes NaN (since NaN - Date.now() is NaN). Since NaN !== undefined, the fallback is skipped and sleep(NaN) is called, which resolves immediately via setTimeout(resolve, NaN). Similarly, a past-date retry-after header produces a negative timeoutMillis, also resolving immediately. Both cases bypass exponential backoff entirely, risking a retry storm against an already-struggling server.

 

[stainless-app]

🤖 Release is at https://github.com/kernel/kernel-node-sdk/releases/tag/v0.43.0 🌻