fastCRW

io.github.us由 GitHub 帳號 us 發布v1.0.0更新於 Nov 2, 2026

Scrape, crawl, map & search the web. Open-source, self-hostable Rust crawler & search for AI agents.

發布方自己的服務:Fastio

已驗證Streamable HTTP可網頁執行網頁搜尋與抓取知識與記憶

概覽

AI 產生的概覽

面向 AI 代理的遠端網頁擷取與搜尋服務:把網址轉成 Markdown 或結構化 JSON,並支援爬站、URL 對應和網頁搜尋。

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
  • 在限定範圍內爬取網站並收集其頁面
  • 對網站做對應以找出 URL,而不必逐頁擷取
  • 搜尋網頁,並可選擇擷取選中的結果
  • 從一個或多個網址擷取結構化欄位
適用情境
適合需要把即時網頁內容變成乾淨文字或結構化資料的情境:閱讀文件頁面、批次收集網站頁面、找出網址,或執行網頁搜尋並視需要擷取結果。
執行需求
透過 streamable HTTP 連線到 fastcrw.com 的遠端端點,需要 OAuth 登入。README 另提到本機 Rust 執行檔與雲端使用的 API 金鑰(CRW_API_KEY),但清單未宣告任何套件或環境變數。
安裝前請注意
託管服務以額度計費,提供 1000 個免費額度,託管使用會產生費用。擷取的網址與內容會傳送給第三方服務;爬取與擷取會存取外部網站,應遵守網站條款與存取頻率限制。README 中的安裝腳本與金鑰處理不屬於 MCP 端點本身。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 fastCRW,將其新增到工作區。
  2. 連接 所需的 憑證。它們會被私密儲存,絕不會在公開頁面上展示。
  3. 為需要使用其工具的對話啟用該服務。

Web executable,透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

交給代理程式安裝

把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式,或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南,先向你展示發布者、端點和登入方式,經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。

閱讀 https://sourceweft.com/mcp/io.github.us%2Ffastcrw/install.md,並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前,先告訴我它的發布者、端點和登入方式,等我確認。不要把 API 金鑰寫進命令或我會提交的檔案;問我金鑰應從哪裡取得。

檢視代理程式所依據的安裝指南

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。 客戶端會在首次連接時完成 OAuth 登入。

{
  "mcpServers": {
    "fastcrw": {
      "type": "http",
      "url": "https://fastcrw.com/mcp"
    }
  }
}

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 147c8d6

工具

0
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版本歷史

1
  1. v1.0.0最新Sep 16, 2026

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