CRW Web Scraper

io.github.us由 GitHub 帳號 us 發布v0.36.0更新於 Oct 25, 2026

Open-source web scraper for AI agents with scrape, crawl, and map tools

概覽

AI 產生的概覽

開源網頁擷取工具,為 AI 助理提供擷取、爬取、網站地圖、搜尋與結構化抽取工具,可將網頁轉為 Markdown 或結構化 JSON。

可以做什麼
  • 將單一網址擷取為 Markdown、HTML、連結、截圖或依 schema 輸出的 JSON
  • 對網站進行有範圍限制的爬取並收集其頁面
  • 產生網站地圖,找出網址而不必逐頁擷取
  • 搜尋網路,並可選擇擷取搜尋結果
  • 從一個或多個網址抽取結構化欄位
適用情境
適合需要把網頁內容轉成便於大型語言模型使用的乾淨格式、批次收集網站頁面,或把網頁整理成結構化欄位的情境。可完全在本機執行以掌控資料,也可改用託管 API 免去自建基礎設施。
執行需求
以本機程序(stdio)執行,支援 macOS 與 Linux 的 Intel 及 ARM;README 另提供容器映像與以 npm 為基礎的 MCP 安裝方式。本機模式不需帳號;託管雲端服務需要以 CRW_API_KEY 提供的 API 金鑰。存取目標網站需要網路連線。
安裝前請注意
雲端服務以額度計費,提供 1000 個免費額度,超出後需付費。安裝腳本會自動向偵測到的 AI 程式開發工具註冊此伺服器,並把 API 金鑰存放在本機設定檔中;設定 CRW_NO_AGENTS=1 可略過註冊步驟。擷取內容來自第三方網站,雲端模式下請求會經由服務商的代理。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 CRW Web Scraper,將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Desktop only,透過 STDIO。 STDIO 服務會啟動本機處理程序,因此需要 SourceWeft 桌面主機。

其他 MCP 客戶端

參照 儲存庫 中的啟動說明。

README

[fastCRW]

fastCRW

Turn URLs into clean markdown or structured JSON with one engine for search, scrape, map, crawl, and extract.

Run it locally as a small Rust binary or use the managed API.

Get 1000 free credits → · Install · Docs

No credit card. Continue with GitHub.

[crates.io] [PyPI] [npm crw-mcp] [CI] [License] [GitHub Stars]

One-command install

bash
curl -fsSL https://fastcrw.com/install | sh

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 →

macOS and Linux, Intel and ARM. More install options →

What it does

OperationOutcome
ScrapeOne URL to markdown, HTML, links, screenshots, or schema JSON
CrawlFollow a bounded site crawl and collect its pages
MapDiscover URLs without scraping every page
SearchSearch the web and optionally scrape selected results
ExtractProduce structured fields from one or many URLs

See the full API →

Why fastCRW

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.

[fastCRW compared with Crawl4AI and Firecrawl on truth-recall, unique recoveries, median latency, download size, and recall depth]

Methodology, full numbers, and how to reproduce it

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.

[AA-Omniscience answer accuracy. fastCRW 90.0 percent, ahead of every product on the Artificial Analysis Search Index: Firecrawl 73, Exa 70, You.com 69, Parallel 68, Tavily 64, and 38 with no search at all.]

The full 14-product comparison, the control run, and how to reproduce it

Choose how you use it

CLI

bash
crw https://example.com            # scrape, works right after installcrw search "rust async runtime"    # search, after `crw setup`

Python SDK

Using Cloud? Get an API key, then export it once:

bash
export CRW_API_KEY="crw_live_..."pip install crw
python
from crw import CrwClient
client = CrwClient()page = client.scrape("https://example.com", formats=["markdown"])
print(page["markdown"])
Node.js
bash
npm install crw-sdk
javascript
import { CrwClient } from "crw-sdk";
const client = new CrwClient();
const page = await client.scrape("https://example.com", {  formats: ["markdown"],});
console.log(page.markdown);

Local mode and more SDK examples → · REST API →

MCP for AI agents

bash
npx -y crw-mcp@latest install

Installs the CRW skill and MCP server in your detected AI tools. crw setup can also do this step, so either path is enough. Manual setup →

Choose where it runs

Managed APILocal / self-hosted
Best forZero infrastructure and managed scalingData control, private networks, or custom infrastructure
StartCreate an API key, then crw setupInstall and run crw <URL>
OperationsManaged proxies, billing, and hosted capabilitiesYou choose renderers, search, auth, proxies, and capacity

Capabilities and response shapes can differ by deployment: /v1/capabilities · response shapes

Self-hosting guide →

Learn more

Contributing

The workspace requires Rust 1.85 or newer:

bash
git clone https://github.com/fastcrw/crwcd crwmake check-fast

Read the contributor guide →

Contributors

crw is better because of these people. Thank you, all of you:

[us] [paoloantinori] [behramcelen] [rqi14] [santhreal] [AsheTheWings] [gjija] [adambenhassen] [atirna] [cdebled] [VIVAAN-DHAWAN] [alkaz-nodemaven] [mj520]

Engine and MCP server: AGPL-3.0. Python and TypeScript SDKs: MIT. Embedding license: [email protected].

Star History

[Star History Chart]

Please respect website policies. Crawl and map follow robots.txt by default.

來源:README.md,提交 37be165

工具

0
SourceWeft 尚未在沙箱中啟動過該軟體包,因此其工具未知。

版本歷史

2
  1. v0.36.0最新Sep 19, 2026
  2. v0.35.1Sep 16, 2026

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