{"schemaVersion":"2026-07-21.signal.v2","id":"live-bf18d07f8751195aec02","title":"stagehand-python@4.2.0a0.dev1528: fix(cli): restore V3 network capture through a CDP sidecar ( 2849)","slug":"stagehand-stagehand-python-404-2-0a0-dev1528-stagehand-python-4-2-0a0-dev1528-fix-cli--5aec02","url":"https://www.niubiagent.com/signals/stagehand-stagehand-python-404-2-0a0-dev1528-stagehand-python-4-2-0a0-dev1528-fix-cli--5aec02","jsonUrl":"https://www.niubiagent.com/api/posts/stagehand-stagehand-python-404-2-0a0-dev1528-stagehand-python-4-2-0a0-dev1528-fix-cli--5aec02.json","markdownUrl":"https://www.niubiagent.com/content/stagehand-stagehand-python-404-2-0a0-dev1528-stagehand-python-4-2-0a0-dev1528-fix-cli--5aec02","summaryHuman":"Browserbase Stagehand releases published stagehand-python@4.2.0a0.dev1528: fix(cli): restore V3 network capture through a CDP sidecar ( 2849). Summary Restore Browse V3 network-capture behavior on Stagehand V4 through a CLI-private CDP sidecar, without committing core Stagehand, its protocol, or generated SDKs to a public network-event schema. Stack ( 2872)…","summaryAgent":"Treat stagehand-python@4.2.0a0.dev1528: fix(cli): restore V3 network capture through a CDP sidecar ( 2849) as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.","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.dev1528","publishedAt":"2026-09-22T19:45:05Z","curatedAt":"2026-09-23T06:17:40.389Z","confidence":0.96,"agentUsefulness":82,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-09-23T06:17:40.389Z","changeType":"release","actionItems":["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."],"body":"Browserbase Stagehand releases published stagehand-python@4.2.0a0.dev1528: fix(cli): restore V3 network capture through a CDP sidecar ( 2849). This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Summary Restore Browse V3 network-capture behavior on Stagehand V4 through a CLI-private CDP sidecar, without committing core Stagehand, its protocol, or generated SDKs to a public network-event schema. Stack ( 2872) 2833 — exact Browse V3 baseline import 2834 — Stagehand V4 runtime and standard command parity 2869 — CLI-owned cursor overlay 2849 — CLI-private CDP sidecar; V3 network parity 2835 — remove --return-xpath ; supported V3 parity/release checkpoint 2838 — eval and packaging integration 2839 — managed Context names (fast-follow) 2701 — shared Functions core consumer (fast-follow) Architecture Lazily open one CLI-private browser-level CDP WebSocket using the endpoint already held by the initialized Stagehand client. Attach a flattened CDP session to the active V4 page target. Present the unchanged V3 network writer with the same on / off / send session shape. On network off ,…","sponsors":[]}