# @ai-sdk/harness@1.0.133

Category: agent-infrastructure
Published: 2026-09-29T09:46:35Z
Source: [Vercel AI SDK releases](https://github.com/vercel/ai/releases/tag/%40ai-sdk/harness%401.0.133)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-29T12:17:40.848Z
Tags: vercel, ai-sdk, typescript

## Human Summary
Vercel AI SDK releases published @ai-sdk/harness@1.0.133. Patch Changes - b2049fa: fix(harness): expose resolveSandboxCredentialEnvironment() helper in favor of createSandboxCredentialEnvironment() and use it across bridge backed adapters - 11f0e71: feat (harness): add HarnessAgentSession.readHistory({ since }) contract to return normalized session history,…

## Agent Summary
Treat @ai-sdk/harness@1.0.133 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Vercel AI SDK releases published @ai-sdk/harness@1.0.133. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Patch Changes - b2049fa: fix(harness): expose resolveSandboxCredentialEnvironment() helper in favor of createSandboxCredentialEnvironment() and use it across bridge backed adapters - 11f0e71: feat (harness): add HarnessAgentSession.readHistory({ since }) contract to return normalized session history, to implement per individual harness adapter - 2b9195b: fix(harness): emit tool lifecycle events and results as each tool runs - 446725d: fix(harness): surface detach failures and keep session handles usable - ai@7.0.122

## Recommended actions
- Review the official Vercel AI SDK releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.