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x402-sms

MCP server by github.com/ultrastarz/x402-sms-mcp

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

0 starsnpm: x402-sms-mcp

About x402-sms

x402-sms is an MCP (Model Context Protocol) server published by ultrastarz in the official MCP registry, listed under Communication on Loomal. Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.

It ships as an npm package (x402-sms-mcp), so any MCP client that can launch a local process can run it.

Development happens in the open at github.com/ultrastarz/x402-sms-mcp.

Use x402-sms with your agent

Claude Code · one command
claude mcp add x402-sms -- npx -y x402-sms-mcp
Claude Desktop, Cursor & other MCP clients · config
{
  "mcpServers": {
    "x402-sms": {
      "command": "npx",
      "args": [
        "-y",
        "x402-sms-mcp"
      ]
    }
  }
}
npmx402-sms-mcp

Frequently asked questions

What is x402-sms?
x402-sms is an MCP (Model Context Protocol) server by ultrastarz in the Communication category. Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.
How do I connect x402-sms to Claude, Cursor, or another MCP client?
Install x402-sms from its npm package (x402-sms-mcp) and register it under "mcpServers" in your client's MCP configuration — for example claude_desktop_config.json or Cursor's mcp.json — then restart the client.
Is x402-sms open source?
Yes — the source code is public at github.com/ultrastarz/x402-sms-mcp.
Can AI agents pay to use x402-sms?
Not yet through Loomal — x402-sms is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.

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Listing data from the official MCP registry and GitHub, refreshed periodically. Not affiliated with the maintainer unless claimed. Maintain x402-sms? Claim this listing free by verifying GitHub ownership, or contact us.