# Express (/fr/quickstarts/express)

<!-- agent-signals: reading_time_min: 4 · est_tokens: 1926 · updated: 2026-07-30 -->
Related: [Node.js](/fr/quickstarts/nodejs.md), [Next.js](/fr/quickstarts/nextjs.md), [NestJS](/fr/quickstarts/nestjs.md), [Fastify](/fr/quickstarts/fastify.md), [Hono](/fr/quickstarts/hono.md), [Bun](/fr/quickstarts/bun.md)

<div id="prerequisites">
  ## Prérequis [#prérequis]
</div>

* Node.js 18+
* Une clé API Firecrawl — [obtenez-en une gratuitement](https://www.firecrawl.dev/app/api-keys)

<div id="setup">
  ## Configuration [#configuration]
</div>

```bash
npm install express firecrawl
```

Ajoutez votre clé API à `.env` :

```bash
FIRECRAWL_API_KEY=fc-YOUR-API-KEY
```

<div id="search-the-web">
  ## Recherche sur le Web [#recherche-sur-le-web]
</div>

```javascript
import express from "express";
import { Firecrawl } from "firecrawl";

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

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

app.post("/search", async (req, res) => {
  try {
    const { query } = req.body;
    const results = await firecrawl.search(query, { limit: 5 });
    res.json(results);
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

app.listen(3000, () => console.log("Server running on port 3000"));
```

<div id="scrape-a-page">
  ## Scraper une page [#scraper-une-page]
</div>

```javascript
app.post("/scrape", async (req, res) => {
  try {
    const { url } = req.body;
    const result = await firecrawl.scrape(url);
    res.json(result);
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});
```

<div id="interact-with-a-page">
  ## Interact avec une page [#interact-avec-une-page]
</div>

Utilisez interact pour contrôler une session de navigateur active — cliquer sur des boutons, remplir des formulaires et extraire du contenu dynamique.

```javascript
app.post("/interact", async (req, res) => {
  try {
    const { url } = req.body;

    const result = await firecrawl.scrape(url, { 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);

    res.json({ output: response.output });
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});
```

<div id="test-it">
  ## Testez-le [#testez-le]
</div>

```bash
curl -X POST http://localhost:3000/search \
  -H "Content-Type: application/json" \
  -d '{"query": "firecrawl web scraping"}'
```

<div id="next-steps">
  ## Prochaines étapes [#prochaines-étapes]
</div>

<CardGroup cols="2">
  <Card title="Documentation Scrape" icon="<svg xmlns=&#x22;http://www.w3.org/2000/svg&#x22; viewBox=&#x22;0 0 24 24&#x22; fill=&#x22;none&#x22;><path d=&#x22;M8 7L16 7&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M8 11L12 11&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M13 21.5V21C13 18.1716 13 16.7574 13.8787 15.8787C14.7574 15 16.1716 15 19 15H19.5M20 13.3431V10C20 6.22876 20 4.34315 18.8284 3.17157C17.6569 2 15.7712 2 12 2C8.22877 2 6.34315 2 5.17157 3.17157C4 4.34314 4 6.22876 4 10L4 14.5442C4 17.7892 4 19.4117 4.88607 20.5107C5.06508 20.7327 5.26731 20.9349 5.48933 21.1139C6.58831 22 8.21082 22 11.4558 22C12.1614 22 12.5141 22 12.8372 21.886C12.9044 21.8623 12.9702 21.835 13.0345 21.8043C13.3436 21.6564 13.593 21.407 14.0919 20.9081L18.8284 16.1716C19.4065 15.5935 19.6955 15.3045 19.8478 14.9369C20 14.5694 20 14.1606 20 13.3431Z&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/></svg>" href="/fr/features/scrape">
    Toutes les options de scrape, y compris les formats, les actions et les proxies
  </Card>

  <Card title="Documentation recherche" icon="<svg xmlns=&#x22;http://www.w3.org/2000/svg&#x22; viewBox=&#x22;0 0 24 24&#x22; fill=&#x22;none&#x22;><path d=&#x22;M8 7L16 7&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M8 11L12 11&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M13 21.5V21C13 18.1716 13 16.7574 13.8787 15.8787C14.7574 15 16.1716 15 19 15H19.5M20 13.3431V10C20 6.22876 20 4.34315 18.8284 3.17157C17.6569 2 15.7712 2 12 2C8.22877 2 6.34315 2 5.17157 3.17157C4 4.34314 4 6.22876 4 10L4 14.5442C4 17.7892 4 19.4117 4.88607 20.5107C5.06508 20.7327 5.26731 20.9349 5.48933 21.1139C6.58831 22 8.21082 22 11.4558 22C12.1614 22 12.5141 22 12.8372 21.886C12.9044 21.8623 12.9702 21.835 13.0345 21.8043C13.3436 21.6564 13.593 21.407 14.0919 20.9081L18.8284 16.1716C19.4065 15.5935 19.6955 15.3045 19.8478 14.9369C20 14.5694 20 14.1606 20 13.3431Z&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/></svg>" href="/fr/features/search">
    Rechercher sur le web et obtenir le contenu complet des pages
  </Card>

  <Card title="Documentation Interact" icon="<svg xmlns=&#x22;http://www.w3.org/2000/svg&#x22; viewBox=&#x22;0 0 24 24&#x22; fill=&#x22;none&#x22;><path d=&#x22;M8 7L16 7&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M8 11L12 11&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M13 21.5V21C13 18.1716 13 16.7574 13.8787 15.8787C14.7574 15 16.1716 15 19 15H19.5M20 13.3431V10C20 6.22876 20 4.34315 18.8284 3.17157C17.6569 2 15.7712 2 12 2C8.22877 2 6.34315 2 5.17157 3.17157C4 4.34314 4 6.22876 4 10L4 14.5442C4 17.7892 4 19.4117 4.88607 20.5107C5.06508 20.7327 5.26731 20.9349 5.48933 21.1139C6.58831 22 8.21082 22 11.4558 22C12.1614 22 12.5141 22 12.8372 21.886C12.9044 21.8623 12.9702 21.835 13.0345 21.8043C13.3436 21.6564 13.593 21.407 14.0919 20.9081L18.8284 16.1716C19.4065 15.5935 19.6955 15.3045 19.8478 14.9369C20 14.5694 20 14.1606 20 13.3431Z&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/></svg>" href="/fr/features/interact">
    Cliquer, remplir des formulaires et extraire du contenu dynamique
  </Card>

  <Card title="Référence du SDK Node" icon="<svg xmlns=&#x22;http://www.w3.org/2000/svg&#x22; viewBox=&#x22;0 0 24 24&#x22; fill=&#x22;none&#x22;><path d=&#x22;M8 7L16 7&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M8 11L12 11&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/><path d=&#x22;M13 21.5V21C13 18.1716 13 16.7574 13.8787 15.8787C14.7574 15 16.1716 15 19 15H19.5M20 13.3431V10C20 6.22876 20 4.34315 18.8284 3.17157C17.6569 2 15.7712 2 12 2C8.22877 2 6.34315 2 5.17157 3.17157C4 4.34314 4 6.22876 4 10L4 14.5442C4 17.7892 4 19.4117 4.88607 20.5107C5.06508 20.7327 5.26731 20.9349 5.48933 21.1139C6.58831 22 8.21082 22 11.4558 22C12.1614 22 12.5141 22 12.8372 21.886C12.9044 21.8623 12.9702 21.835 13.0345 21.8043C13.3436 21.6564 13.593 21.407 14.0919 20.9081L18.8284 16.1716C19.4065 15.5935 19.6955 15.3045 19.8478 14.9369C20 14.5694 20 14.1606 20 13.3431Z&#x22; stroke=&#x22;currentColor&#x22; stroke-linecap=&#x22;round&#x22; stroke-linejoin=&#x22;round&#x22; stroke-width=&#x22;1.5&#x22;/></svg>" href="/fr/sdks/node">
    Référence complète du SDK avec crawl, cartographie, extraction par lot, etc.
  </Card>
</CardGroup>
