Stagehand
A browser automation SDK from Browserbase that provides three AI primitives—act, observe and extract—and supports TypeScript, Python and Go.
Core Facts
Stagehand's npm package name is @browserbasehq/stagehand
Stagehand's Extract feature uses Zod Schema to validate the data structure returned by the large model, ensuring the output format strictly matches the predefined structure
Stagehand's underlying browser driver engine is Playwright, and all final browser operations are executed through Playwright's API
Timeline (last 90 days)
Browser Use and Stagehand are code-library browser agents embedded in developers' programs as Python/TypeScript/Go libraries.
Stagehand is an MIT-licensed SDK from Browserbase covering TypeScript, Python, and Go, and provides three AI primitives: act, observe, and extract.
All Facts (9)
Stagehand's npm package name is @browserbasehq/stagehand
65%VerifiedStagehand's Extract feature uses Zod Schema to validate the data structure returned by the large model, ensuring the output format strictly matches the predefined structure
65%VerifiedStagehand's underlying browser driver engine is Playwright, and all final browser operations are executed through Playwright's API
65%VerifiedStagehand breaks browser automation down into four atomic operations: Act, Extract, Observe, and Agent
65%UnverifiedStagehand的Observe功能先扫描当前页面返回所有可执行操作列表（包括元素描述、可用方法和CSS selector），后续操作可以绕过大模型直接通过Playwright原生API执行
90%UnverifiedStagehand由BrowserBase团队开发维护，BrowserBase是一个云端浏览器基础设施服务商
55%UnverifiedBrowser Use and Stagehand are code-library browser agents embedded in developers' programs as Python/TypeScript/Go libraries.
50%UnverifiedStagehand is an MIT-licensed SDK from Browserbase covering TypeScript, Python, and Go, and provides three AI primitives: act, observe, and extract.
50%Unverified在实际浏览器自动化项目中，大约70-80%的操作是结构化的、可预测的，剩余20-30%涉及动态内容理解
50%