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stagehand

SDK for driving browsers with natural-language act, observe and extract calls

Documentation ↗ (opens in a new tab)Website ↗ (opens in a new tab)Repository on GitHub ↗ (opens in a new tab)
Stars
25.6k
License
MIT
Last commit
Oct 2026
Last release
Aug 2026
Language
TypeScript

Missed the latest GitHub check; these facts may be older.

Overview

Stagehand is a browser automation SDK for TypeScript, Python and Go with Playwright-style page and locator methods. It adds LLM-driven act(), observe() and extract() calls, with schema-validated extraction and selectors returned so credentials stay out of the model. It runs against local Chrome or Browserbase's hosted browsers, where a model gateway and server-side caching are also available.

Who it is for: Developers building browser automations and web agents in TS, Python or Go

Strengths

  • Same browser driver API across TypeScript, Python and Go SDKs
  • observe() returns real selectors, so credentials can be filled without the model seeing them
  • extract() validates output against Zod or Pydantic schemas, or Go types
  • Deep locators for nested iframes and closed Shadow DOM; OTel traces

Weaknesses

  • Local runs require Chrome installed
  • Model gateway, server-side caching, proxies and session replay need a Browserbase account
  • Local use needs an LLM provider API key, and each action costs tokens
  • Fetch and Search add-ons use the Browserbase API key

What it needs

  • no GPU
  • Needs Chrome, LLM provider API key (e.g. OpenAI), Browserbase API key (optional, for cloud)
  • Models: OpenAI (openai/gpt-5.4-mini in examples), Browserbase Model Gateway

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