release: 0.45.0

[stainless-app]

Automated Release PR

0.45.0 (2026-03-28)

Full Changelog: v0.44.0...v0.45.0

Features

• [kernel-1008] browser pools add custom policy (e740db7)
• internal: support comma format in multipart form encoding (74f5c6a)

Bug Fixes

• prevent duplicate ? in query params (66d97d3)

Chores

• ci: skip lint on metadata-only changes (8296238)
• ci: support opting out of skipping builds on metadata-only commits (708da0f)
• client: fix multipart serialisation of Default() fields (cabda49)
• internal: support default value struct tag (dd77af4)
• internal: update gitignore (48baab7)
• remove unnecessary error check for url parsing (05d2048)
• update docs for api:"required" (abfd988)

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Note

Medium Risk
Medium risk because it changes core request serialization (query param concatenation, multipart encoding, and new default tag behavior) which can affect outbound request shapes across the SDK.

Overview
Bumps the SDK release to 0.45.0 (manifest, internal version constant, README pin, changelog/spec metadata) and tweaks CI to skip the build job for metadata-only codegen metadata commits.

Adds chrome_policy support to browser pool create/update/config types (with tests) and introduces a default:"…" struct tag used by internal JSON and multipart form encoders to emit default string values when fields are zero (also applied to several event/region fields). Multipart form encoding now supports comma-formatted arrays, and URL building avoids producing duplicate ? when appending query parameters.

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[stainless-app]

🧪 Testing

To try out this version of the SDK:

Download and unzip: 'https://pkg.stainless.com/s/kernel-go/abfd9883774e74c2d4c2cc482377364432318e27/source.zip'. Run 'go mod edit -replace github.com/kernel/kernel-go-sdk=/path/to/unzipped_directory'.

Expires at: Mon, 27 Apr 2026 04:12:16 GMT
Updated at: Sat, 28 Mar 2026 04:12:16 GMT

[cursor]

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

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[cursor]

Ignored url.Parse error risks nil pointer dereference

Low Severity

The error from url.Parse(u) is discarded with parsed, _ := url.Parse(u). In Go's standard library, url.Parse returns nil for the *URL when it fails. If u contains control characters or invalid percent-encoding (e.g., %GG), parsed will be nil and the subsequent parsed.RawQuery access will panic with a nil pointer dereference.