MCPLow riskUnclaimed

x402-sms

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

UltraStarzultrastarz/x402-smsUpdated May 15, 2026

server.json

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.UltraStarz/x402-sms",
  "description": "Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.",
  "repository": {
    "url": "https://github.com/UltraStarz/x402-sms-mcp",
    "source": "github"
  },
  "version": "0.1.0",
  "packages": [
    {
      "registryType": "npm",
      "identifier": "x402-sms-mcp",
      "version": "0.1.0",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Ethereum private key for the buyer wallet that pays the per-call USDC fee.",
          "isRequired": true,
          "format": "string",
          "isSecret": true,
          "name": "BUYER_PRIVATE_KEY"
        }
      ]
    }
  ]
}

Permissions

DeclaredDetected
Runs code—node
Installs—npm:x402-sms-mcp@0.1.0
Runs install scripts—None
NetworkNoneNone
Needs credentialsBUYER_PRIVATE_KEYBUYER_PRIVATE_KEY
Outside the workspace—None
Agent tools—None

Checks

Low risk · Nothing worth a warning was found.

Not reviewed by a person · Checked by rules; the model review is not switched on yet.

Versions

  1. #10.1.0latestOct 7, 2026