x402-sms-mcp
Rank #61,777io.github.UltraStarz/x402-sms
Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.
x402-sms-mcp is a Model Context Protocol (MCP) server published by UltraStarz. It ranks #61,777 of 132,113 servers tracked on MCP Toplist. x402-sms-mcp is listed across 3 registries — Official MCP, PulseMCP and Glama, with 1 tracked version. It was first listed on May 14, 2026 and most recently updated on May 15, 2026.
Ranks ahead of 70,336 of 132,113 servers on MCP Toplist.
Use x402-sms-mcp
Requires user-supplied configuration before first use — typically an API key, token or connection string set via environment variables.
claude mcp add x402-sms -e "BUYER_PRIVATE_KEY=<your BUYER_PRIVATE_KEY>" -- npx -y x402-sms-mcpReplace each placeholder with your own value before saving.
[mcp_servers.x402-sms]
command = "npx"
args = ["-y", "x402-sms-mcp"]
[mcp_servers.x402-sms.env]
BUYER_PRIVATE_KEY = "<your BUYER_PRIVATE_KEY>"Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"x402-sms": {
"command": "npx",
"args": [
"-y",
"x402-sms-mcp"
],
"env": {
"BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>"
}
}
}
}Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.
{
"mcpServers": {
"x402-sms": {
"command": "npx",
"args": [
"-y",
"x402-sms-mcp"
],
"env": {
"BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.
{
"servers": {
"x402-sms": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"x402-sms-mcp"
],
"env": {
"BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>"
}
}
}
}Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"x402-sms": {
"command": "npx",
"args": [
"-y",
"x402-sms-mcp"
],
"env": {
"BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"x402-sms": {
"command": "npx",
"args": [
"-y",
"x402-sms-mcp"
],
"env": {
"BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>"
}
}
}
}Replace each placeholder with your own value before saving.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/io.github.UltraStarz%2Fx402-sms)<a href="https://mcptoplist.com/server/io.github.UltraStarz%2Fx402-sms"><img src="https://mcptoplist.com/badge/io.github.UltraStarz%2Fx402-sms.svg" alt="MCP Toplist: Top 50% of 132,113" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 3 registries
UltraStarz
Other servers by UltraStarz
View all UltraStarz servers →Available versions (1)
| Version | Published |
|---|---|
| 0.1.0 | May 15, 2026 |
Frequently asked questions
- Who maintains x402-sms-mcp?
- x402-sms-mcp is maintained by UltraStarz, which publishes 2 MCP servers (2 total versions) tracked on MCP Toplist.
- Is x402-sms-mcp listed on the Official MCP Registry?
- Yes — x402-sms-mcp is listed on the Official MCP Registry, alongside PulseMCP and Glama.
- How many versions does x402-sms-mcp have?
- MCP Toplist tracks 1 version of x402-sms-mcp, most recently published on May 15, 2026.
- Where can I find the source code for x402-sms-mcp?
- The source code for x402-sms-mcp is hosted at github.com/ultrastarz/x402-sms-mcp.
Do you run this server?
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