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X402 Sms

MCP server · by UltraStarz

Web APIs npm v0.1.0

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

View source ↗ More servers

Install

Run one of the commands below, then add the client config underneath.

npmnpx -y x402-sms-mcp

Client configuration

Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.

mcpServers{
  "mcpServers": {
    "x402-sms": {
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp"
      ]
    }
  }
}

About this server

X402 Sms is listed in the Web APIs category of the MCPNav directory. It is distributed as npm and can be loaded by any client that speaks the Model Context Protocol.

Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.

Frequently asked questions

What is the X402 Sms MCP server?

X402 Sms is an MCP server by UltraStarz. Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.

How do I install X402 Sms?

Install it with: npx -y x402-sms-mcp. Then add the JSON config to your client's MCP settings and restart the client.

Is X402 Sms free to use?

The MCP server itself is free to install. The source is public on https://github.com/UltraStarz/x402-sms-mcp. Any third-party API it calls (such as a search or maps API) may require its own key and billing.

Which clients support X402 Sms?

Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.