Stagehand
An SDK for building browser agents that extract data from and interact with any website, using Playwright-style methods across TypeScript, Python and Go.
Stagehand is an SDK for browser agents that lets an agent sign in once, keep the session, and pull structured data out the other side. It uses Playwright-style methods such as goto, click, locator and screenshot that developers and agents already know, and gives agents self-healing act, observe and extract operations that adjust how an action happens when a site's layout changes.
It trims the accessibility tree to give an agent only the page context it needs, reducing token use, and runs as an extension alongside the browser to cut round-trip latency. It supports agent-oriented features such as WebMCP, clipboard access, batch commands, and deep locators for nested iframes and closed shadow DOMs, plus OpenTelemetry traces. The same driver is available in TypeScript, Python and Go.
Local runs need Chrome installed; it can also run on the Browserbase cloud service, which adds a model gateway, caching, residential proxies and session recordings. A hosted Browserbase MCP server exposes navigate, act, observe and extract to any MCP client without a local browser. It is licensed under the MIT license.