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Bolt.new by StackBlitz is an AI-powered full-stack development environment that runs entirely in the browser. You can use ScrapeGraphAI to add live web scraping capabilities to any Bolt.new application.

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How it works

Bolt.new can generate Node.js / Express backends alongside your frontend. Make ScrapeGraphAI API calls from the backend to keep your API key secret and avoid CORS errors.

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Setup

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1. Tell Bolt to create an Express backend

Start a new Bolt project and prompt it:
Create a full-stack app with an Express backend. Add a POST endpoint at /api/scrape that accepts url and prompt fields, calls the ScrapeGraphAI SmartScraper API, and returns the result.

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2. Backend endpoint

Bolt will generate something like this — make sure the API key is loaded from an environment variable: 
import express from "express";
import fetch from "node-fetch";

const app = express();
app.use(express.json());

app.post("/api/scrape", async (req, res) => {
  const { url, prompt } = req.body;

  const response = await fetch("https://api.scrapegraphai.com/v1/smartscraper", {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "SGAI-APIKEY": process.env.SGAI_API_KEY,
    },
    body: JSON.stringify({
      website_url: url,
      user_prompt: prompt,
    }),
  });

  const data = await response.json();
  res.json(data);
});

app.listen(3001);

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3. Add your API key

In Bolt.new, open the environment variables panel and add: 
SGAI_API_KEY=your-api-key-here

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4. Call from the frontend

const response = await fetch("/api/scrape", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    url: "https://example.com",
    prompt: "Extract the product name and price",
  }),
});

const data = await response.json();
console.log(data.result);

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Example prompt for Bolt

Build a price tracker UI. It should have an input for a product URL and a button. When clicked, it calls the backend scrape endpoint and shows the extracted product name and price in a card.