X402 Sms MCP Server

by ultrastarz Your server? Claim it

local only

X402 Sms runs on your own machine — the client starts it, so there is no endpoint to ping. 29 installs a week from npm. Last commit 22 May 2026.

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

Installs per day peak 23 · avg 6 · -7% w/w

a month agotoday

Installs / week

npm · x402-sms-mcp

Stars

0 open issues

22 May 2026

Last commit

0 releases in 90 days

—

License

JavaScript

Nothing serious here today

Today is the operative word: we check X402 Sms every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add x402-sms -- npx -y x402-sms-mcp

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

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

~/.codex/config.toml

[mcp_servers.x402-sms]
command = "npx"
args = ["-y", "x402-sms-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

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

This one needs environment variables set before it will start: BUYER_PRIVATE_KEY (Ethereum private key for the buyer wallet that pays the per-call USDC fee.). The author declared them in the registry entry; get the values from the project itself.

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X402 Sms — questions

Answers built from our own checks of this server.

Why is there no uptime for X402 Sms?

X402 Sms runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package x402-sms-mcp was installed 29 times last week.

How do I connect X402 Sms?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls x402-sms-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use X402 Sms?

The npm package x402-sms-mcp was installed 29 times in the last week. Week over week that is -7%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is X402 Sms open source?

We cannot say either way: written in JavaScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.