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@clawfetch/mcp

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@clawfetch/mcp

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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, 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.

Related MCP server: WebScrape MCP Server

💻 Self-Hosted Mode

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

Install

npm install -g @clawfetch/mcp

Configure (stdio — for local MCP clients)

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

{
  "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:

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

Endpoint

Method

Description

/mcp

POST

Initialize session — returns Mcp-Session-Id header

/mcp

GET

SSE stream for server-to-client notifications (requires session ID)

/mcp

DELETE

Close a session

/health

GET

Server 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

Tool

Description

Cost

fetch_url

Fetch any URL as clean markdown

$0.001

render_page

Render JS-heavy pages (SPAs, React apps)

$0.005

extract_data

Extract structured data from 17+ site types

$0.008

research_topic

Multi-source research with citations

$0.02

check_domains

Check domain name availability

$0.003

suggest_domains

Generate available domain suggestions

$0.003

parse_document

Parse office docs (docx/pptx/xlsx/pdf/…) to markdown

$0.005

list_extractors

List supported structured data extractors

$0.001

health_check

Check API health status

Free

wallet_info

Show payment wallet address

Free

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

Variable

Required

Default

Description

CLAWFETCH_PRIVATE_KEY

Yes*

—

Ethereum private key (0x-prefixed) for x402 payments

CLAWFETCH_BASE_URL

No

https://api.clawfetch.ai

API base URL

CLAWFETCH_TRANSPORT

No

stdio

Transport: stdio or http

CLAWFETCH_HOST

No

127.0.0.1

HTTP server bind address

CLAWFETCH_ALLOWED_HOSTS

No

localhost,127.0.0.1,[::1]

Comma-separated Host header allowlist for the HTTP transport (DNS-rebinding protection)

CLAWFETCH_PORT

No

3001

HTTP server port

CLAWFETCH_TIMEOUT_MS

No

60000

Request timeout in ms

CLAWFETCH_DEBUG

No

false

Enable debug logging (1 or true)

* Required. Keep this key in your local configuration; never submit it to the ClawFetch website.

Development

git clone https://github.com/clawfetch/clawfetch-mcp.git
cd clawfetch-mcp
npm install
npm run build
npm test

License

MIT

This server cannot be deployed

Let your AI agent see the webWeb-to-screenshot MCP for Claude, Cursor and Codex. No cookie banners. Free to start.snap-render.comAd

Maintenance

ActivityMaintained
ResponsivenessUnresponsive

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