Fastify

结合 Fastify 使用 Firecrawl，构建高性能网页抓取和搜索 API。

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前提条件

• Node.js 18+
• Firecrawl API 密钥 — 免费获取

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配置

npm install fastify @mendable/firecrawl-js

将你的 API 密钥添加到 .env 中：

FIRECRAWL_API_KEY=fc-YOUR-API-KEY

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进行网页搜索

import Fastify from "fastify";
import Firecrawl from "@mendable/firecrawl-js";

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

fastify.post("/search", async (request) => {
  const { query } = request.body;
  return firecrawl.search(query, { limit: 5 });
});

fastify.listen({ port: 3000 });

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抓取网页

fastify.post("/scrape", async (request) => {
  const { url } = request.body;
  return firecrawl.scrape(url);
});

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与页面交互

使用交互控制实时浏览器会话，可点击按钮、填写表单并提取动态内容。

fastify.post("/interact", async (request) => {
  const { url } = request.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);

  return { output: response.output };
});

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作为 Fastify 插件

将客户端封装为插件，以便在不同路由之间复用：

import fp from "fastify-plugin";
import Firecrawl from "@mendable/firecrawl-js";

export default fp(async function firecrawlPlugin(fastify) {
  const client = new Firecrawl({ apiKey: process.env.FIRECRAWL_API_KEY });
  fastify.decorate("firecrawl", client);
});

注册该插件后，即可在任意路由中使用 fastify.firecrawl：

fastify.register(firecrawlPlugin);

fastify.post("/search", async function (request) {
  const { query } = request.body;
  return this.firecrawl.search(query, { limit: 5 });
});

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试一试

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

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后续步骤

抓取文档

包含所有抓取选项，包括 formats、actions 和代理

Search 文档

进行网页搜索并获取完整页面内容

交互文档

点击、填写表单并提取动态内容

Node SDK 参考

完整的 SDK 参考，涵盖爬取、map、batch 抓取 等功能