crawl4ai

An open-source web crawler and scraper tool that converts any website into clean, LLM-friendly Markdown.

MCPResearchOpen source

Type: MCP
Transport: http
Open source: Yes
GitHub Stars: ★ 84.3k
Source: mcp-github
Repository: github.com/unclecode/crawl4ai

Overview

Crawl4AI is an open-source web crawler and scraping tool that transforms any website into clean, LLM-ready Markdown format. You can run it locally or use the Crawl4AI Cloud service with just a single API key. Crawl4AI offers multiple integration options including a Python library, Docker container, and cloud service. It's ideal for scenarios requiring structured data extraction from web pages for RAG, AI agents, and data pipelines.

Capabilities

▪Convert web pages into clean Markdown
▪Support asynchronous browser pools and caching
▪Provide full control options such as sessions, proxies, and cookies
▪Adaptive intelligence that learns website patterns
▪Generate Markdown optimized for LLM reading

Use cases

Extract structured data from web pagesProvide data for RAG and AI agentsBuild data pipelinesAutomate web content processing

Setup

Requires: API KeyPython环境

pip install -U crawl4ai"crawl4ai-setup"

This information was compiled by AI from public sources and may contain inaccuracies — please refer to the source.

FAQ

How do I get started with Crawl4AI?

You can install and run it via pip, or use the Crawl4AI Cloud service.

Is Crawl4AI free?

The open-source version is permanently free; the cloud service is pay-as-you-go.

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