release: 0.53.0

[stainless-app]

Automated Release PR

0.53.0 (2026-05-12)

Full Changelog: v0.52.0...v0.53.0

Features

• Add 'switch' MFA option type for generic method-switcher links (b6c0d17)
• Add opt-in record_session flag to managed auth (5673b41)
• api: server-side search on GET /projects (81a050d)
• browser_pools: add start_url config (KERNEL-1217 PR 2) (b2c8f95)
• managed-auth: surface awaiting_external_action even when fallback actions exist (c1a9ba4)
• Scope name uniqueness to project for profiles, session_pools, extensions, credentials (be3c6bd)

Bug Fixes

• go: avoid panic when http.DefaultTransport is wrapped (15e7a88)

Chores

• avoid embedding reflect.Type for dead code elimination (c267709)
• redact api-key headers in debug logs (405d242)

Documentation

• clarify record_session description in OpenAPI spec (c61abfa)

---

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---

Note

Medium Risk
Moderate risk: mostly additive API surface changes, but it also adjusts core client behavior (default transport handling and debug logging) and internal encoder/decoder cache keys, which could subtly affect request/response serialization or logging output.

Overview
Bumps the SDK to v0.53.0 and updates release metadata/docs (CHANGELOG.md, README.md, internal/version.go, spec URL/hash).

Expands the API surface for managed auth by adding an opt-in record_session flag (connection defaults + per-login override), adding 'switch' as an MFA option type, and documenting that discovered_fields/mfa_options/pending_sso_buttons/sign_in_options may appear as fallback actions during AWAITING_EXTERNAL_ACTION.

Adds start_url support for browsers and browser pools (request param + response fields) and adds server-side search via ProjectListParams.Query.

Hardens client internals: avoids panic when http.DefaultTransport isn’t a *http.Transport, redacts sensitive headers in option.WithDebugLog, and tweaks internal encoder/decoder cache structs to avoid embedding reflect.Type (for dead-code elimination).

^{Reviewed by Cursor Bugbot for commit 3677403. 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:

Download and unzip: 'https://pkg.stainless.com/s/kernel-go/c61abfa3c5aa1d355bce51c10d08ad962e08424e/source.zip'. Run 'go mod edit -replace github.com/kernel/kernel-go-sdk=/path/to/unzipped_directory'.

Expires at: Thu, 11 Jun 2026 23:00:15 GMT
Updated at: Tue, 12 May 2026 23:00:15 GMT

[masnwilliams]

lgtm

[stainless-app]

🤖 Release is at https://github.com/kernel/kernel-go-sdk/releases/tag/v0.53.0 🌻