agent-runtime-kit 0.5.2 refreshes the supported SDK baselines and fixes Antigravity permission and Vertex Express authentication behavior. Existing public APIs remain compatible.
Tested SDK versions
| Package | 0.5.1 baseline | 0.5.2 baseline |
|---|---|---|
| Claude Agent SDK | 0.2.148 | 0.2.157 |
| Codex SDK | 0.147.0 | 0.154.0 |
| Coupled Codex CLI | 0.147.0 | 0.154.0 |
| Google Antigravity SDK | 0.1.15 | 0.1.17 |
The Codex dependency cap is now <0.155; the SDK continues to select its exact CLI version. Provider packages remain optional extras, and Python 3.10+ remains supported.
Changed
- Updated tested Claude Agent SDK to
0.2.157, Google Antigravity SDK to
0.1.17, and the Codex SDK and its exactly coupled CLI to0.154.0. - SDK evolution supports explicit model, reasoning effort and analysis executable
options, preserves older locked baselines in implementation history, and
constructs real Claude options and Codex wire parameters in candidate probes. - Upgrade skill invocations now include necessary runtime adaptations,
verification, and a regular pull request. Explicit report-only and local-only
requests retain their narrower scope.
Fixed
- Antigravity permissive deny-lists preserve all unrelated tools when the SDK's
default tool set changes, including theask_questionchange in 0.1.17. - Codex release evidence uses the current official documentation endpoints.
- Antigravity preserves explicit
vertex=Truewith an API key for Vertex
Express authentication, rejects mixed regional credentials, and refuses older
SDKs or configurations that would silently drop the requested endpoint. - Release-note collection recognizes versions present only in a GitHub
discussion title and rejects unrelated or longer version-prefix matches. - PyPI publication validates and uploads Core Metadata 2.5 distributions with
matching Twine support.
Validation and scope
The upgrade passed 553 local tests with 90.36% package coverage, minimum-dependency checks, Ruff and strict mypy. Live Codex checks covered structured output, independent task sessions, session resume, process reuse and cleanup. Claude and Antigravity validation covered local configurations and adapter contracts; their live services were not exercised.
See the SDK compatibility review for upstream impact decisions and evidence limits.
Included changes: #58, #59, #60.
Full changelog: v0.5.1...v0.5.2