io.github.UltraStarz/x402-sms

io.github.UltraStarz/x402-sms

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

View repository →

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "x402-sms": {
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp@0.1.0"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>"
      }
    }
  }
}
Environment variables
  • BUYER_PRIVATE_KEYrequiredsecretEthereum private key for the buyer wallet that pays the per-call USDC fee.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.1.0
Registry
active
Published
5/15/2026

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