Stagehand

To build from source:

git clone https://github.com/browserbase/stagehand.git
cd stagehand
just install
just generate
just build

Set environment variables:

export OPENAI_API_KEY="your-openai-api-key"
export BROWSERBASE_API_KEY="your-browserbase-api-key"

import { browserbase, Stagehand } from "@browserbasehq/stagehand";
import { z } from "zod/v4";

const { BROWSERBASE_API_KEY, OPENAI_API_KEY } = process.env;

const browser = await browserbase.launch({
  apiKey: BROWSERBASE_API_KEY,
});

const stagehand = await Stagehand.create({
  browser,
  model: {
    modelName: "openai/gpt-5.4-mini",
    apiKey: OPENAI_API_KEY,
  },
});

const [page] = await browser.context.pages();
await page.goto("https://github.com/browserbase");

await stagehand.act("click on the stagehand repo");

const { data: actions } = await stagehand.observe("find the latest PR");
await page.locator(actions[0].selector).click();

const {
  data: { author, title },
} = await stagehand.extract(
  "extract the author and title of the PR",
  z.object({
    author: z.string().describe("The username of the PR author"),
    title: z.string().describe("The title of the PR"),
  }),
);