Stagehand — the SDK for browser agentsEvalsBlogShowcase

// changelog

Search, Fetch, and better WebMCP support in Stagehand 4.1

Stagehand 4.1 adds first-party Browserbase Search and Fetch, improved WebMCP iframe support, and clearer close behavior.

Stagehand team1 min read
changelog
Green and black halftone pine trees beneath pale blue mountains
++

We're excited to announce Stagehand 4.1!

In this release, we've focused on providing first-class support for the Browserbase platform, namely our Fetch and Search APIs, as well as improving support for WebMCP across all websites, which helps agents interact with the web more reliably and deterministically.

Here are the highlights:

  • WebMCP works better with iframes — discover and call tools inside embedded frames running in separate browser processes.
  • First-party Search + Fetch tools — use browserbase.search() and browserbase.fetch() directly from Stagehand without needing to import the Browserbase SDK separately. Available in every language!
  • Clearer close behavior — stagehand.close() now preserves the browser for reuse. browser.close() and browser.context.close() terminate it, regardless of keepAlive status.

Full release notes

We can't wait to see what you build!

++