io.github.readfetch/mcp-x402-proxy
Stdio MCP proxy: free probe, then x402-paid ReadFetch tools; for hosts that cannot sign x402.
Target client
run in your project directory
claude mcp add mcp-x402-proxy -e EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY> -e READFETCH_MAX_PAYMENT_USD=<READFETCH_MAX_PAYMENT_USD> -e READFETCH_MCP_URL=<READFETCH_MCP_URL> -e READFETCH_DEV=<READFETCH_DEV> -- npx -y @readfetch/mcp-x402-proxy
setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok LangChain
Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs
This listing does not declare its tools. Connect the server and your client will discover them on the handshake.