> ## 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.

# Vercel Functions

> 通过 Vercel Functions 在无服务器部署中使用 Firecrawl，以搜索、抓取并与网页数据交互。

<div id="prerequisites">
  ## 前置条件
</div>

* Vercel 项目 (Next.js、SvelteKit、Nuxt 或独立项目)
* 一个 Firecrawl API 密钥 — [免费获取](https://www.firecrawl.dev/app/api-keys)

<div id="setup">
  ## 设置
</div>

```bash theme={null}
npm install firecrawl
```

在 Vercel 项目设置中将 `FIRECRAWL_API_KEY` 添加为环境变量，或在本地开发时将其添加到 `.env.local` 中：

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

<div id="search-the-web">
  ## 进行网页搜索
</div>

创建 `api/search.ts` (如果使用 Next.js，则为 `app/api/search/route.ts`) ：

```typescript theme={null}
import { Firecrawl } from "firecrawl";

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

export async function POST(request: Request) {
  const { query } = await request.json();
  const results = await firecrawl.search(query, { limit: 5 });

  return new Response(JSON.stringify(results), {
    headers: { "Content-Type": "application/json" },
  });
}
```

<div id="scrape-a-page">
  ## 抓取网页
</div>

创建 `api/scrape.ts` (如果使用 Next.js，则为 `app/api/scrape/route.ts`) ：

```typescript theme={null}
import { Firecrawl } from "firecrawl";

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

export async function POST(request: Request) {
  const { url } = await request.json();
  const result = await firecrawl.scrape(url);

  return new Response(JSON.stringify(result), {
    headers: { "Content-Type": "application/json" },
  });
}
```

<div id="interact-with-a-page">
  ## 与页面交互
</div>

创建 `api/interact.ts` (若使用 Next.js，则创建 `app/api/interact/route.ts`) ：

```typescript theme={null}
import { Firecrawl } from "firecrawl";

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

export async function POST(request: Request) {
  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",
  });

  await firecrawl.stopInteraction(scrapeId);

  return new Response(JSON.stringify({ output: response.output }), {
    headers: { "Content-Type": "application/json" },
  });
}
```

<div id="deploy">
  ## 部署
</div>

```bash theme={null}
vercel deploy
```

<div id="test-it">
  ## 测试一下
</div>

```bash theme={null}
curl -X POST https://your-project.vercel.app/api/search \
  -H "Content-Type: application/json" \
  -d '{"query": "firecrawl web scraping"}'
```

<Note>
  Vercel Functions 在 Hobby (入门) 套餐中的默认超时时间为 10 秒，在 Pro 套餐中为 60 秒。对于大型爬取任务，建议改用支持 Webhook 的 Firecrawl 异步 API。
</Note>

<div id="next-steps">
  ## 后续步骤
</div>

<CardGroup cols={2}>
  <Card title="搜索文档" icon="magnifying-glass" href="/zh/features/search">
    进行网页搜索并获取完整页面内容
  </Card>

  <Card title="抓取文档" icon="file-lines" href="/zh/features/scrape">
    包含所有抓取选项，如 formats、actions 和代理
  </Card>

  <Card title="交互文档" icon="hand-pointer" href="/zh/features/interact">
    点击、填写表单并提取动态内容
  </Card>

  <Card title="Node SDK 参考" icon="node" href="/zh/sdks/node">
    完整的 SDK 参考，涵盖爬取、map、batch scrape 等功能
  </Card>
</CardGroup>