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Prerequisites

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Setup

Create main.ts: 
import Firecrawl from "npm:@mendable/firecrawl-js";

const firecrawl = new Firecrawl({
  apiKey: Deno.env.get("FIRECRAWL_API_KEY"),
});

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Search the web

Add a /search route that searches the web and returns results with full page content. 
Deno.serve(async (req) => {
  const url = new URL(req.url);

  if (req.method === "POST" && url.pathname === "/search") {
    const { query } = await req.json();
    const results = await firecrawl.search(query, { limit: 5 });
    return Response.json(results);
  }

  return new Response("Not found", { status: 404 });
});

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Scrape a page

Add a /scrape route to extract clean markdown from any URL. 
if (req.method === "POST" && url.pathname === "/scrape") {
  const { url: targetUrl } = await req.json();
  const result = await firecrawl.scrape(targetUrl);
  return Response.json(result);
}

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Interact with a page

Add an /interact route to control a live browser session — click buttons, fill forms, and extract dynamic content. 
if (req.method === "POST" && url.pathname === "/interact") {
  const result = await firecrawl.scrape("https://www.amazon.com", {
    formats: ["markdown"],
  });
  const scrapeId = result.metadata?.scrapeId;

  await firecrawl.interact(scrapeId, {
    prompt: "Search for iPhone 16 Pro Max",
  });
  const response = await firecrawl.interact(scrapeId, {
    prompt: "Click on the first result and tell me the price",
  });
  console.log(response.output);

  await firecrawl.stopInteraction(scrapeId);
  return Response.json({ output: response.output });
}

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Run locally

FIRECRAWL_API_KEY=fc-YOUR-API-KEY deno run --allow-net --allow-env main.ts

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Deploy

Install the Deno Deploy CLI (deployctl) and deploy: 
deployctl deploy --project=my-scraper main.ts
Set the environment variable in the Deno Deploy dashboard or via CLI: 
deployctl env set FIRECRAWL_API_KEY=fc-YOUR-API-KEY --project=my-scraper

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Test it

curl -X POST https://my-scraper.deno.dev/search \
  -H "Content-Type: application/json" \
  -d '{"query": "firecrawl web scraping"}'

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Next steps

Search docs

Search the web and get full page content

Scrape docs

All scrape options including formats, actions, and proxies

Interact docs

Click, fill forms, and extract dynamic content

Node SDK reference

Full SDK reference with crawl, map, batch scrape, and more