Clawfetch

ai.clawfetch由 clawfetch.ai 发布v0.4.0更新于 Nov 4, 2026

Web intelligence for AI agents: fetch, render, extract, research. x402 micropayments, no API keys.

已验证STDIO仅桌面网页搜索与抓取金融

概览

AI 生成的概览

ClawFetch MCP 为助手提供网页情报工具：抓取网页为 Markdown、渲染 SPA、提取结构化数据、多源调研，按次以 Base 上的 USDC 付费。

可以做什么
  • 抓取与渲染网页：把任意 URL 抓取为干净的 Markdown，渲染依赖 JavaScript 的单页应用
  • 从 17 种以上站点类型（GitHub、npm、PyPI、X、LinkedIn、YouTube、Reddit 等）提取结构化数据，并列出可用提取器
  • 跨多个来源带引用地调研主题，并根据域名生成公司画像
  • 把办公文档（docx、pptx、xlsx、pdf）解析为 Markdown
  • 查询域名是否可用并生成域名建议
  • 检查 API 健康状态并显示付款钱包地址
适用场景
适合需要实时网页内容、特定站点类型的结构化数据或多来源调研，并且愿意用加密钱包按次小额付费而不想管理 API 密钥的场景。
运行要求
以 npm 包（@clawfetch/mcp，需 Node.js）在本地通过 stdio 运行，也可选本地 HTTP 服务。需要环境变量 CLAWFETCH_PRIVATE_KEY，填入持有 USDC 的 Base 钱包的 EVM 私钥，并需能访问 ClawFetch API 的网络。公开托管端点已停用。
安装前请注意
服务器需要私钥（CLAWFETCH_PRIVATE_KEY）来签署 Base 主网上真实的 USDC 付款，私钥泄露会危及钱包资金，建议使用专用且余额较低的钱包。除健康检查和钱包信息外，每次工具调用都会产生费用，ClawFetch 不补贴请求。抓取的 URL、文档和域名会发送给第三方 API。若把 HTTP 传输暴露到回环地址之外，需谨慎配置允许的主机。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Clawfetch，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Desktop only，通过 STDIO。 STDIO 服务会启动本地进程，因此需要 SourceWeft 桌面宿主。

其他 MCP 客户端

参照 仓库 中的启动说明。

README

@clawfetch/mcp

[AllMCPs Verified]

MCP (Model Context Protocol) server for ClawFetch — Web Intelligence API for AI Agents.

Gives any MCP-compatible client (Claude Desktop, Cursor, Windsurf, OpenClaw, etc.) instant access to ClawFetch's web intelligence tools: fetch pages as markdown, render JS-heavy SPAs, extract structured data from 17+ site types, research topics multi-source, enrich companies from a domain, and check domain availability.

Payments are handled automatically via the x402 protocol — USDC on Base. No API keys, no billing dashboards.

Access and payment

The public hosted MCP endpoint is retired and returns HTTP 410 Gone. Run the MCP locally using the setup below, or call https://api.clawfetch.ai directly. Paid tool calls use your own USDC-funded wallet on Base; ClawFetch does not subsidize requests.

💻 Self-Hosted Mode

Run your own instance with full control over the payment wallet.

Install

bash
npm install -g @clawfetch/mcp

Configure (stdio — for local MCP clients)

Add to your MCP client config (e.g., Claude Desktop):

json
{  "mcpServers": {    "clawfetch": {      "command": "clawfetch-mcp",      "env": {        "CLAWFETCH_PRIVATE_KEY": "0xYOUR_ETHEREUM_PRIVATE_KEY"      }    }  }}

The private key signs x402 micropayments (USDC on Base). Fund the corresponding address with USDC on Base mainnet.

Run as HTTP Server

Expose the MCP server over HTTP for remote clients:

bash
CLAWFETCH_PRIVATE_KEY=0x... CLAWFETCH_TRANSPORT=http CLAWFETCH_PORT=3001 clawfetch-mcp

This starts a server at http://localhost:3001/mcp using the Streamable HTTP transport (MCP spec compliant). By default it binds to 127.0.0.1 and accepts only loopback Host headers, which blocks DNS-rebinding attacks from web pages. To serve remote clients, set CLAWFETCH_HOST=0.0.0.0 and list your public hostnames in CLAWFETCH_ALLOWED_HOSTS.

HTTP Endpoints
EndpointMethodDescription
/mcpPOSTInitialize session — returns Mcp-Session-Id header
/mcpGETSSE stream for server-to-client notifications (requires session ID)
/mcpDELETEClose a session
/healthGETServer health check (JSON)
Session Flow
  1. Initialize: POST /mcp with JSON-RPC initialize request → get Mcp-Session-Id header
  2. Call tools: POST /mcp with Mcp-Session-Id header + JSON-RPC tools/call request
  3. Stream: GET /mcp?sessionId=... for SSE notifications (optional)
  4. Close: DELETE /mcp with Mcp-Session-Id header

Tools

ToolDescriptionCost
fetch_urlFetch any URL as clean markdown$0.001
render_pageRender JS-heavy pages (SPAs, React apps)$0.005
extract_dataExtract structured data from 17+ site types$0.008
research_topicMulti-source research with citations$0.02
check_domainsCheck domain name availability$0.003
suggest_domainsGenerate available domain suggestions$0.003
parse_documentParse office docs (docx/pptx/xlsx/pdf/…) to markdown$0.005
enrich_companyCompany profile from a domain: socials, emails, tech stack, key pages$0.02
list_extractorsList supported structured data extractors$0.001
health_checkCheck API health statusFree
wallet_infoShow payment wallet addressFree

Supported Extractors

GitHub repos/profiles, npm packages, PyPI packages, Twitter/X profiles, LinkedIn profiles/companies, YouTube videos/channels, Product Hunt, Hacker News, Reddit, Crunchbase, Wikipedia, and more.

Use list_extractors to see all available types with their schema.

Environment Variables

VariableRequiredDefaultDescription
CLAWFETCH_PRIVATE_KEYYes*—Ethereum private key (0x-prefixed) for x402 payments
CLAWFETCH_BASE_URLNohttps://api.clawfetch.aiAPI base URL
CLAWFETCH_TRANSPORTNostdioTransport: stdio or http
CLAWFETCH_HOSTNo127.0.0.1HTTP server bind address
CLAWFETCH_ALLOWED_HOSTSNolocalhost,127.0.0.1,[::1]Comma-separated Host header allowlist for the HTTP transport (DNS-rebinding protection)
CLAWFETCH_PORTNo3001HTTP server port
CLAWFETCH_TIMEOUT_MSNo60000Request timeout in ms
CLAWFETCH_DEBUGNofalseEnable debug logging (1 or true)

* Required for tool calls. Without it the server still starts and lists its tools, resources and prompts (so registries can inspect it), and every call returns setup instructions. Keep this key in your local configuration; never submit it to the ClawFetch website.

Development

bash
git clone https://github.com/clawfetch/clawfetch-mcp.gitcd clawfetch-mcpnpm installnpm run buildnpm test

License

MIT

来源：README.md，提交 d29172e

工具

0
SourceWeft 曾在隔离沙箱中以无凭据方式启动该软件包一次，以列出其工具，但未能完成：服务器未能启动。

版本历史

3
  1. v0.4.0最新Oct 21, 2026
  2. v0.3.2Sep 25, 2026
  3. v0.2.2Sep 16, 2026

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