io.github.UltraStarz/x402-sms MCP Server

Name: io.github.UltraStarz/x402-sms MCP Server
Author: io.github.UltraStarz

io.github.UltraStarz/x402-sms

Repository Registry

What is the io.github.UltraStarz/x402-sms MCP server?

Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.

How to install io.github.UltraStarz/x402-sms

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

BUYER_PRIVATE_KEY
required
secret
Ethereum private key for the buyer wallet that pays the per-call USDC fee.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "x402-sms": {
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<YOUR_BUYER_PRIVATE_KEY>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "x402-sms": {
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<YOUR_BUYER_PRIVATE_KEY>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "x402-sms": {
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<YOUR_BUYER_PRIVATE_KEY>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "x402-sms": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<YOUR_BUYER_PRIVATE_KEY>"
      }
    }
  }
}

Claude Code

claude mcp add x402-sms --env BUYER_PRIVATE_KEY=<YOUR_BUYER_PRIVATE_KEY> -- npx -y x402-sms-mcp

Related MCP servers

io.github.UltraStarz/x402-extract

Maintained

Pay-per-call MCP server. $0.01 USDC extracts schema.org/Product JSON from any URL via x402.

JavaScript

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