release: 0.19.0

[stainless-app]

Automated Release PR

0.19.0 (2026-05-12)

Full Changelog: v0.18.0...v0.19.0

Features

• go: add default http client with timeout (4562f58)
• support setting headers via env (3b6d6cd)
• Track per-phase duration on each instance (312c26f)

Bug Fixes

• go: avoid panic when http.DefaultTransport is wrapped (90abdb2)

Chores

• avoid embedding reflect.Type for dead code elimination (768a2a1)
• internal: more robust bootstrap script (53ef042)
• redact api-key headers in debug logs (0f70339)

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Note

Medium Risk
Medium risk because it changes default HTTP behavior (new client/transport timeout) and alters debug logging to redact headers, which could affect connectivity and troubleshooting behavior across all SDK consumers.

Overview
Release v0.19.0 updates generated SDK metadata/versioning and refreshes the OpenAPI spec reference.

Adds a new default http.Client that clones http.DefaultTransport (when possible) to set a ResponseHeaderTimeout, and extends DefaultClientOptions to support HYPEMAN_CUSTOM_HEADERS for injecting arbitrary headers.

Expands Instance responses with lifecycle tracking fields (current_phase, current_phase_since, phase_durations_ms), redacts sensitive headers in option.WithDebugLog, and refactors internal encoder cache keys to avoid embedding reflect.Type (plus a small bootstrap script robustness tweak).

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[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/hypeman-go/312c26f13a0c22a91b902b51c13a431452dca79d/source.zip'. Run 'go mod edit -replace github.com/kernel/hypeman-go=/path/to/unzipped_directory'.

Expires at: Thu, 11 Jun 2026 12:40:34 GMT
Updated at: Tue, 12 May 2026 12:40:34 GMT

[cursor]

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

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^{Reviewed by Cursor Bugbot for commit b9f3593. Configure here.}

[stainless-app]

🤖 Release is at https://github.com/kernel/hypeman-go/releases/tag/v0.19.0 🌻