browserbase/stagehand is an SDK for browser agents that extract data from websites and interact with them. The latest public release is stagehand-server-v3/v3.7.7. The provided FACTS contain no changelog for this release, so what is new in this version cannot be confirmed.
The SDK connects browser sessions and models to help agents perform browser tasks. It can maintain login state while extracting structured data, and it provides a Playwright-style API along with natural-language-based act·observe·extract features. act is used to perform tasks, observe to watch browser state, and extract to pull data. It supports TypeScript, Python and Go, and also offers Browserbase execution, an MCP server, and Search·Fetch features. MCP is the protocol that connects agents with tools. The repository description states the purpose of extracting data from and interacting with websites across the board.
The repository is written in TypeScript and follows the MIT license. However, the provided information includes neither the specific changes in v3.7.7 nor any performance measurements. It is therefore difficult to judge the scope of improvement in this release, and the verifiable range extends only to the features the SDK provides and the environments it supports.