Skip to content

stagehand

vstagehand-server-v3/v3.7.0 Breaking

This release includes 2 breaking changes for platform teams planning a safe upgrade.

Published 7d AI Agents & Assistants
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

agents ai llms playwright puppeteer selenium

ReleasePort's take

Moderate signal
editorial:auto 7d

The release removes the entire packages/server-v4 directory and eliminates the braintrust API key requirement for evals.

Why it matters: Deleting server‑v4 breaks any code that imports or depends on it; action is required if your project uses this package. The removal of the braintrust API key simplifies eval configurations without additional credentials.

Summary

AI summary

Removed the packages/server-v4 directory and eliminated the braintrust API key requirement for evals.

Changes in this release

Breaking High

Delete packages/server-v4 entirely.

Delete packages/server-v4 entirely.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Feature Medium

Add `screenshot` option to Extract.

Add `screenshot` option to Extract.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Feature Medium

Add evaluator backend facade to verifier.

Add evaluator backend facade to verifier.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Feature Medium

Publish eval results in workflow.

Publish eval results in workflow.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Feature Medium

Add verifier evaluator shell and types.

Add verifier evaluator shell and types.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Feature Medium

Record agent trajectories in verifier.

Record agent trajectories in verifier.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Dependency Low

Update lockfile.

Update lockfile.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Dependency Low

Bump `ws` dependency.

Bump `ws` dependency.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Bugfix Medium

Remove braintrust API key requirement in evals.

Remove braintrust API key requirement in evals.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Bugfix Low

Fix SDK API reference parameter labels.

Fix SDK API reference parameter labels.

Source: llm_adapter@2026-05-27

Confidence: high

 —
Full changelog

What's Changed

  • Add screenshot option to Extract by @miguelg719 in https://github.com/browserbase/stagehand/pull/2149
  • feat(verifier): add evaluator backend facade by @miguelg719 in https://github.com/browserbase/stagehand/pull/2129
  • Workflow: publish eval results by @miguelg719 in https://github.com/browserbase/stagehand/pull/2093
  • fix[evals] remove braintrust api key requirement (#2145) by @miguelg719 in https://github.com/browserbase/stagehand/pull/2153
  • Delete packages/server-v4 entirely for now by @pirate in https://github.com/browserbase/stagehand/pull/2151
  • feat(verifier): add verifier evaluator shell and types by @miguelg719 in https://github.com/browserbase/stagehand/pull/2157
  • feat(verifier): record agent trajectories by @miguelg719 in https://github.com/browserbase/stagehand/pull/2131
  • Fix SDK API reference parameter labels by @monadoid in https://github.com/browserbase/stagehand/pull/2164
  • [chore]: update lockfile by @seanmcguire12 in https://github.com/browserbase/stagehand/pull/2168
  • [chore]: bump ws dep by @seanmcguire12 in https://github.com/browserbase/stagehand/pull/2169
  • [STG-1756] forward Vertex model config by @monadoid in https://github.com/browserbase/stagehand/pull/2160

Full Changelog: https://github.com/browserbase/stagehand/compare/stagehand-server-v3/v3.6.10...stagehand-server-v3/v3.7.0

Breaking Changes

  • Delete packages/server-v4 entirely for now
  • fix[evals] remove braintrust api key requirement
View diff on GitHub

Weekly OSS security release digest.

The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

No spam, unsubscribe anytime.

Share this release

Share on X Share on Bluesky

Track stagehand

Get notified when new releases ship.

Sign up free

About stagehand

The SDK For Browser Agents

All releases →

Related context

Earlier breaking changes

Beta — feedback welcome: [email protected]