mcp-pay-server

mcp-pay-server

0
finance

MCP Pay Server is a standalone implementation of the Model Context Protocol, providing HTTP and SSE transport with a pre-pay credit system using USDC deposits. It supports bidirectional communication and offers various tools and resources.

MCP Pay Server

A standalone implementation of the Model Context Protocol (MCP) server featuring HTTP+SSE transport and a pre-pay credit system.

Features

  • Exposes MCP tools, resources, and prompts
  • Supports bidirectional communication with HTTP+SSE
  • Implements a payment system using USDC deposits on Base or Base Sepolia
  • Built with Express, TypeScript, Viem, and Zod

Usage

Start the server and monitor USDC deposits to the configured address.

Payment System Overview

The server uses a pre-pay credit system verified by cryptographic signatures. Clients connect, fetch payment capabilities, send USDC to the server's deposit address, and use paid tools by verifying their balance and signing requests.

Available Endpoints

  • POST /mcp for client requests
  • GET /mcp for SSE stream

Available Tools

  • greet: A greeting tool requiring payment
  • payments_getBalance: Returns the credit balance (free)

Available Resources

  • mcp-pay://server/payment/info: Returns the deposit address.