release: 0.16.0

[stainless-app]

Automated Release PR

0.16.0 (2026-03-23)

Full Changelog: v0.15.0...v0.16.0

Features

• add active ballooning reclaim controller (b8ecb54)
• Add always-on /metrics endpoint with dual pull/push telemetry (0b3751a)
• Add optional snapshot compression defaults and standby integration (b6d9ab3)
• add optional VM egress MITM proxy with mock-secret header rewriting (e8b721c)
• Add strict metadata tags across mutable resources (8b5543e)
• Rename tag fields from metadata to tags (2f8e29e)
• Snapshot (c4a0fbb)
• support updating egress proxy secret envs for key rotation (96b3209)

Chores

• ci: skip uploading artifacts on stainless-internal branches (0d9d654)
• internal: codegen related update (e6a6702)
• internal: minor cleanup (1917d6d)
• internal: tweak CI branches (6dc7e68)
• internal: use explicit returns (923db74)
• internal: use explicit returns in more places (16131b8)
• update placeholder string (bea84ac)

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📚 Read the docs
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Note

Medium Risk
Adds multiple new API surfaces (snapshots, instance update/standby params, memory reclaim) and changes several method signatures (e.g., List now takes query params, Standby now takes a body), which may be breaking for SDK consumers. Also tweaks retry-delay handling, which can affect client-side request behavior under throttling.

Overview
Bumps the SDK to v0.16.0 and updates generated docs/metadata (CHANGELOG.md, README.md, .stats.yml).

Expands the API surface with snapshot management (new Snapshots service plus Instances.Snapshots for create/restore), instance mutation via Instances.Update, and a memory reclaim endpoint (Resources.ReclaimMemory) with new request/response models.

Introduces a cross-resource tags pattern (replacing/augmenting prior metadata semantics) by adding tags fields to multiple resources and tag-based filtering for list endpoints; also changes several List methods to accept explicit query param structs.

Includes internal/CI maintenance: CI branch filtering + skipping artifact uploads on stl/* branches, safer/explicit returns and error handling in internal encoders/decoders, and adjusted retry delay behavior to honor Retry-After without the previous 1-minute cap.

^{Written by Cursor Bugbot for commit 5c811cd. This will update automatically on new commits. Configure here.}

[stainless-app]

🧪 Testing

To try out this version of the SDK:

Download and unzip: 'https://pkg.stainless.com/s/hypeman-go/b6d9ab3d0b4ffdd7d56153464387ed9e603d8d0a/source.zip'. Run 'go mod edit -replace github.com/kernel/hypeman-go=/path/to/unzipped_directory'.

Expires at: Wed, 22 Apr 2026 17:11:36 GMT
Updated at: Mon, 23 Mar 2026 17:11:36 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]

Retry delay upper bound removed, risking indefinite blocking

Medium Severity

The retryDelay function previously capped the server's Retry-After value at one minute (retryAfterDelay < time.Minute), falling through to exponential backoff (max 8 seconds) for larger values. The new code removes this upper bound entirely via return max(0, retryAfterDelay), so a misconfigured or adversarial server returning a very large Retry-After (e.g. hours or days) will cause the client to block for that entire duration. The select on ctx.Done() at line 468 only helps if the caller set a context deadline — callers using context.Background() would hang indefinitely.

 

[stainless-app]

🤖 Release is at https://github.com/kernel/hypeman-go/releases/tag/v0.16.0 🌻