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Firecrawl + Anthropic (Claude) ​

Updated Feb 2026

Integrate Firecrawl with Anthropic's Claude to build AI applications powered by web data. Scrape any URL, feed content to Claude, and use tool use for dynamic scraping.

Source: docs.firecrawl.dev/developer-guides/llm-sdks-and-frameworks/anthropic

Installation ​

bash
npm install @mendable/firecrawl-js @anthropic-ai/sdk zod zod-to-json-schema

Create a .env file:

env
FIRECRAWL_API_KEY=your_firecrawl_key
ANTHROPIC_API_KEY=your_anthropic_key

Node < 20

If using Node < 20, install dotenv and add import 'dotenv/config' to your code.

Scrape + Summarize ​

Scrape a website and summarize the content using Claude.

js
import FirecrawlApp from '@mendable/firecrawl-js';
import Anthropic from '@anthropic-ai/sdk';

const firecrawl = new FirecrawlApp({ apiKey: process.env.FIRECRAWL_API_KEY });
const anthropic = new Anthropic({ apiKey: process.env.ANTHROPIC_API_KEY });

const scrapeResult = await firecrawl.scrape('https://firecrawl.dev', {
    formats: ['markdown']
});

console.log('Scraped content length:', scrapeResult.markdown?.length);

const message = await anthropic.messages.create({
    model: 'claude-sonnet-4-20250514',
    max_tokens: 1024,
    messages: [
        { role: 'user', content: `Summarize in 100 words: ${scrapeResult.markdown}` }
    ]
});

console.log('Response:', message);

Tool Use ​

Let Claude decide when to scrape websites based on user requests using Anthropic's tool use feature.

js
import FirecrawlApp from '@mendable/firecrawl-js';
import { Anthropic } from '@anthropic-ai/sdk';
import { z } from 'zod';
import { zodToJsonSchema } from 'zod-to-json-schema';

const firecrawl = new FirecrawlApp({ apiKey: process.env.FIRECRAWL_API_KEY });
const anthropic = new Anthropic({ apiKey: process.env.ANTHROPIC_API_KEY });

const ScrapeArgsSchema = z.object({
    url: z.string()
});

const response = await anthropic.messages.create({
    model: 'claude-sonnet-4-20250514',
    max_tokens: 1024,
    tools: [{
        name: 'scrape_website',
        description: 'Scrape and extract markdown content from a website URL',
        input_schema: zodToJsonSchema(ScrapeArgsSchema, 'ScrapeArgsSchema')
    }],
    messages: [{
        role: 'user',
        content: 'What is Firecrawl? Check firecrawl.dev'
    }]
});

const toolUse = response.content.find(block => block.type === 'tool_use');

if (toolUse && toolUse.type === 'tool_use') {
    const input = toolUse.input;
    console.log(`Calling tool: ${toolUse.name} | URL: ${input.url}`);

    const result = await firecrawl.scrape(input.url, {
        formats: ['markdown']
    });

    console.log(`Scraped content preview: ${result.markdown?.substring(0, 300)}...`);
}

Structured Extraction ​

Use Claude to extract structured data from scraped website content.

js
import FirecrawlApp from '@mendable/firecrawl-js';
import Anthropic from '@anthropic-ai/sdk';
import { z } from 'zod';

const firecrawl = new FirecrawlApp({ apiKey: process.env.FIRECRAWL_API_KEY });
const anthropic = new Anthropic({ apiKey: process.env.ANTHROPIC_API_KEY });

const CompanyInfoSchema = z.object({
    name: z.string(),
    industry: z.string().optional(),
    description: z.string().optional()
});

const scrapeResult = await firecrawl.scrape('https://stripe.com', {
    formats: ['markdown'],
    onlyMainContent: true
});

const prompt = `Extract company information from this website content.

Output ONLY valid JSON in this exact format (no markdown, no explanation):

{
  "name": "Company Name",
  "industry": "Industry",
  "description": "One sentence description"
}

Website content:
${scrapeResult.markdown}`;

const message = await anthropic.messages.create({
    model: 'claude-sonnet-4-20250514',
    max_tokens: 1024,
    messages: [
        { role: 'user', content: prompt },
        { role: 'assistant', content: '{' }
    ]
});

const textBlock = message.content.find(block => block.type === 'text');

if (textBlock && textBlock.type === 'text') {
    const jsonText = '{' + textBlock.text;
    const companyInfo = CompanyInfoSchema.parse(JSON.parse(jsonText));
    console.log(companyInfo);
}

Further Reading ​