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Firecrawl

This guide shows how to use Firecrawl with LangChain to load web data into an LLM-ready format using Firecrawl.

Overview​

FireCrawl crawls and convert any website into LLM-ready data. It crawls all accessible subpages and give you clean markdown and metadata for each. No sitemap required.

FireCrawl handles complex tasks such as reverse proxies, caching, rate limits, and content blocked by JavaScript. Built by the mendable.ai team.

This guide shows how to scrap and crawl entire websites and load them using the FireCrawlLoader in LangChain.

Setup​

Sign up and get your free FireCrawl API key to start. FireCrawl offers 300 free credits to get you started, and it's open-source in case you want to self-host.

Usage​

Here's an example of how to use the FireCrawlLoader to load web search results:

Firecrawl offers 2 modes: scrape and crawl. In scrape mode, Firecrawl will only scrape the page you provide. In crawl mode, Firecrawl will crawl the entire website.

npm install @mendable/firecrawl-js
import { FireCrawlLoader } from "langchain/document_loaders/web/firecrawl";

const loader = new FireCrawlLoader({
  url: "https://firecrawl.dev", // The URL to scrape
  apiKey: process.env.FIRECRAWL_API_KEY, // Optional, defaults to `FIRECRAWL_API_KEY` in your env.
  mode: "scrape", // The mode to run the crawler in. Can be "scrape" for single urls or "crawl" for all accessible subpages
  params: {
    // optional parameters based on Firecrawl API docs
    // For API documentation, visit https://docs.firecrawl.dev
  },
});

const docs = await loader.load();

API Reference:

Additional Parameters​

For params you can pass any of the params according to the Firecrawl documentation.

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