> ## Documentation Index
> Fetch the complete documentation index at: https://docs.firecrawl.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Bun

> Use Firecrawl with Bun to build fast web scraping and search servers.

## Prerequisites

* Bun 1.0+
* A Firecrawl API key — [get one free](https://www.firecrawl.dev/app/api-keys)

## Install the SDK

```bash theme={null}
bun add @mendable/firecrawl-js
```

Add your API key to `.env`:

```bash theme={null}
FIRECRAWL_API_KEY=fc-YOUR-API-KEY
```

## Search the web

Bun has a built-in HTTP server. Create `index.ts`:

```typescript theme={null}
import Firecrawl from "@mendable/firecrawl-js";

const firecrawl = new Firecrawl({ apiKey: process.env.FIRECRAWL_API_KEY });

Bun.serve({
  port: 3000,
  async fetch(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 });
  },
});

console.log("Server running on port 3000");
```

Run it:

```bash theme={null}
bun run index.ts
```

## Scrape a page

Add a `/scrape` route to the same server:

```typescript theme={null}
if (req.method === "POST" && url.pathname === "/scrape") {
  const { url: targetUrl } = await req.json();
  const result = await firecrawl.scrape(targetUrl);
  return Response.json(result);
}
```

## Interact with a page

Use interact to control a live browser session — click buttons, fill forms, and extract dynamic content.

```typescript theme={null}
if (req.method === "POST" && url.pathname === "/interact") {
  const { url: targetUrl } = await req.json();

  const result = await firecrawl.scrape(targetUrl, { 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' });

  await firecrawl.stopInteraction(scrapeId);

  return Response.json({ output: response.output });
}
```

## Script usage

Use Firecrawl in a standalone Bun script:

```typescript theme={null}
import Firecrawl from "@mendable/firecrawl-js";

const app = new Firecrawl({ apiKey: process.env.FIRECRAWL_API_KEY });
const results = await app.search("firecrawl web scraping", { limit: 5 });
console.log(results);
```

```bash theme={null}
bun run search.ts
```

## Next steps

<CardGroup cols={2}>
  <Card title="Scrape docs" icon="file-lines" href="/features/scrape">
    All scrape options including formats, actions, and proxies
  </Card>

  <Card title="Search docs" icon="magnifying-glass" href="/features/search">
    Search the web and get full page content
  </Card>

  <Card title="Interact docs" icon="hand-pointer" href="/features/interact">
    Click, fill forms, and extract dynamic content
  </Card>

  <Card title="Node SDK reference" icon="node" href="/sdks/node">
    Full SDK reference with crawl, map, batch scrape, and more
  </Card>
</CardGroup>