{"schemaVersion":"2026-07-21.signal.v2","id":"live-ffeca0d9fb27bf73d24e","title":"stagehand-python@4.2.0a0.dev1558","slug":"stagehand-stagehand-python-404-2-0a0-dev1558-stagehand-python-4-2-0a0-dev1558-73d24e","url":"https://www.niubiagent.com/signals/stagehand-stagehand-python-404-2-0a0-dev1558-stagehand-python-4-2-0a0-dev1558-73d24e","jsonUrl":"https://www.niubiagent.com/api/posts/stagehand-stagehand-python-404-2-0a0-dev1558-stagehand-python-4-2-0a0-dev1558-73d24e.json","markdownUrl":"https://www.niubiagent.com/content/stagehand-stagehand-python-404-2-0a0-dev1558-stagehand-python-4-2-0a0-dev1558-73d24e","summaryHuman":"Browserbase published a pre-release version of stagehand-python (4.2.0a0.dev1558) adding animated onboarding for agent benchmarks.","summaryAgent":"Browserbase released stagehand-python@4.2.0a0.dev1558 featuring an animated onboarding experience for agent benchmark evaluations.","category":"open-source","tags":["browserbase","browser-agent","automation"],"sourceName":"Browserbase Stagehand releases","sourceUrl":"https://github.com/browserbase/stagehand/releases/tag/stagehand-python%404.2.0a0.dev1558","publishedAt":"2026-09-30T23:09:43Z","curatedAt":"2026-10-01T00:17:52.598Z","confidence":0.96,"agentUsefulness":77,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-02T00:17:51.797Z","changeType":"release","actionItems":["Test stagehand-python@4.2.0a0.dev1558 if running agent benchmark evaluations using Stagehand Python SDK pre-releases."],"body":"Browserbase published pre-release package stagehand-python@4.2.0a0.dev1558. The commit note outlines a feature addition: 'feat : evals welcome — animated onboarding on the agent benchmarks…'.","sponsors":[]}