release: 0.111.0

[stainless-app]

Automated Release PR

0.111.0 (2026-09-22)

Features

• Allow managed auth logins to disable learned skills (aee0b02)
• Distinguish optimistic managed auth reauth (68c5100)
• Implement Search API v1 providers (0554699)
• Persist stable managed auth completion timestamps (ca8d465)
• Publish restricted_route_unavailable and unknown proxy_error codes (6e379e6)
• Support native prepared Adyen Sessions checkout (dd9a4a4)

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Note

Medium Risk
Large generated surface area plus semantic changes to managed-auth reauth flags and payment checkout (Adyen); consumers parsing can_reauth or proxy error codes may need updates.

Overview
Release 0.111.0 bumps the package version and documents four new API endpoint groups (169 configured endpoints). The headline addition is Search API v1: client.Search supports POST /search and GET /search/{id}, nested Contents.Fetch and Providers.List, plus generated types for multi-provider strategies (Brave, Exa, Perplexity, Tavily, SerpAPI, and others), content retrieval options, and provider capability metadata.

Managed auth types and docs are updated: can_reauth / can_reauth_reason now describe eligibility for unattended re-auth (not a guarantee), including a new optimistic_totp_attempt reason; login accepts optional skill_mode (enabled / disabled) for learned domain skills; timeline events gain stable completed_at for terminal login/reauth attempts.

Browser telemetry proxy errors add origin_response_incomplete, restricted_route_unavailable, and unknown with optional raw_code when the header is unrecognized.

Vault / AgentCard checkout adds adyen as a prepared processor and broadens preparation/checkout copy for device handoff (including Adyen Sessions on merchant origins).

^{Reviewed by Cursor Bugbot for commit 2405e1d. Bugbot is set up for automated code reviews on this repo. Configure here.}

[stainless-app]

🧪 Testing

To try out this version of the SDK:

Download and unzip: 'https://pkg.stainless.com/s/kernel-go/05546992051b109e2a59e1b4a7f6f4455b1470db/source.zip'. Run 'go mod edit -replace github.com/kernel/kernel-go-sdk=/path/to/unzipped_directory'.

Expires at: Thu, 22 Oct 2026 15:07:26 GMT
Updated at: Tue, 22 Sep 2026 15:07:26 GMT

[cursor]

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

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[cursor]

Zero SerpAPI enum values omitted

Medium Severity

Filter and Nfpr are optional int64 fields with omitzero, but 0 is a documented valid value for both. Setting either to 0 is treated as unset and dropped from the request, so callers cannot send SerpAPI filter=0 or nfpr=0.

 

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[chruffins]

approved for the coordinated 0.111.0 SDK release; version and generated Search API surface match the Python and Node releases.

[stainless-app]

🤖 Release is at https://github.com/kernel/kernel-go-sdk/releases/tag/v0.111.0 🌻