Open-source web scraper for AI agents with scrape, crawl, and map tools
io.github.us/crw MCP Server (fastCRW)
The io.github.us/crw MCP server is an open-source web scraper for AI agents. It provides tools to scrape, crawl, and map content, turning URLs into clean markdown or structured JSON. It can run as a small Rust binary or be used via a managed API.
🛠️ Key Features
Web scraping for AI agents
Tools for scrape, crawl, and map
Output as clean markdown or structured JSON
Works as a local Rust binary or managed API
Container- and deployment-oriented (includes docker topic)
🚀 Use Cases
URL-to-markdown conversion for downstream processing
Structured data extraction from web pages (JSON)
Crawling and mapping web content for agent workflows
⚡ Developer Benefits
One engine for search/scrape/map/crawl/extract (per description)
Self-hosted or API-based operation
Includes MCP server integration (topic: mcp-server)
⚠️ Limitations
Description provided does not specify tool parameter limits, supported sites, or rate limits.
Runs local and free, no account needed. To use the Cloud, paste your key into
the same command and it installs the binary, connects the key, and registers the
MCP server with the AI coding tools you already have:
bash
curl -fsSL https://fastcrw.com/install | CRW_API_KEY=crw_live_... sh
bash
crw search "rust tutorials"
Claude Code, Cursor, Codex, Gemini CLI, OpenCode and Windsurf are picked up
automatically when they are already set up; nothing else is touched, and your
key stays in ~/.config/crw/config.toml rather than being copied into each
tool. Add CRW_NO_AGENTS=1 to skip that step, or run crw setup on its own to
choose interactively.
1000 free credits, no credit card. Managed proxies, JS rendering and search,
with nothing to run or keep up to date.
Get my free key →
On Firecrawl's own public 1,000-URL dataset, fastCRW recovered more truth than
Crawl4AI and Firecrawl, matched the fastest median latency, and idled at
~14 MB RAM.
On a different benchmark entirely, answer accuracy rather than scrape recall,
fastCRW answers 90.0% of the 600 AA-Omniscience questions correctly. Every
product listed on the Artificial Analysis Search Index sits below it.