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stagehand

SDK for browser agents with act, observe and extract calls, used from TypeScript and Python to automate sites and pull out structured data.

Harness by browserbase

IndexedMIT★ 25,800
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Install

From the package registry. Read the repository before you give any tool access to your data.

npm install @browserbasehq/stagehand

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About

Stagehand is an SDK for browser agents. Its act call performs a described action on a page, observe returns real selectors so credentials need not reach the model, and extract returns data validated against a schema such as zod or Pydantic. Browser sessions can persist cookies between runs. The README shows TypeScript and Python code and its banner mentions Go, with an OpenAI model in the examples.

Use cases: browser-automation, web-scraping

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Fact sheet

Languages
TypeScript, Python, GoREADME
Packages
@browserbasehq/stagehand (npm)README
Model providers
openaiREADME
Maturity
Stablegithub.com

Facts extracted by Claude Sonnet 5.5 from the linked sources on Oct 24, 2026; reviewed Oct 24, 2026. Wrong fact? Tell us.

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Stars
25,800
Forks
1,780
Open issues
104
Weekly downloads
996,024
Last commit
Oct 23, 2026 (6 days ago)
Last release
Oct 23, 2026 (7 days ago)
Last package publish
Oct 20, 2026 (10 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Packages
npm @browserbasehq/stagehand
License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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Cite this page

stagehand. Agent Mart. https://agentmart.dev/harnesses/stagehand (last updated 2026-10-24)