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ai.clawfetch/mcp

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

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @clawfetch/mcp
Claude Code 
claude mcp add ai-clawfetch-mcp -e 'CLAWFETCH_PRIVATE_KEY=<your clawfetch_private_key>' -- npx -y @clawfetch/mcp@0.4.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "ai-clawfetch-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "@clawfetch/mcp@0.4.0"
            ],
            "env": {
                "CLAWFETCH_PRIVATE_KEY": "<your clawfetch_private_key>"
            }
        }
    }
}

Environment variables

  • CLAWFETCH_PRIVATE_KEY required secret EVM private key for a Base wallet holding USDC (pays x402 micropayments gaslessly)

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. @clawfetch/mcp
  2. Access and payment
  3. 💻 Self-Hosted Mode
  4. Tools
  5. Environment Variables
  6. Development
  7. License

@clawfetch/mcp

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
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
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

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

License

MIT

Frequently asked questions

What is ai.clawfetch/mcp?

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

How do I install ai.clawfetch/mcp?

It runs on your machine. In Claude Code: claude mcp add ai-clawfetch-mcp -e 'CLAWFETCH_PRIVATE_KEY=<your clawfetch_private_key>' -- npx -y @clawfetch/mcp@0.4.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does ai.clawfetch/mcp need an API key?

Yes. It expects CLAWFETCH_PRIVATE_KEY, which you set in its configuration.

Is ai.clawfetch/mcp open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains ai.clawfetch/mcp?

It is published by clawfetch. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.