# @browserbasehq/stagehand@4.2.1

Category: open-source
Published: 2026-10-10T17:36:24Z
Source: [Browserbase Stagehand releases](https://github.com/browserbase/stagehand/releases/tag/%40browserbasehq%2Fstagehand%404.2.1)
Agent usefulness: 72/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-10T18:17:41.901Z
Tags: browserbase, browser-agent, automation

## Human Summary
Browserbase Stagehand releases published @browserbasehq/stagehand@4.2.1. @browserbasehq/stagehand@4.2.1

## Agent Summary
Treat @browserbasehq/stagehand@4.2.1 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Browserbase Stagehand releases published @browserbasehq/stagehand@4.2.1. 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: @browserbasehq/stagehand@4.2.1

## Recommended actions
- Review the official Browserbase Stagehand 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.