Server data from the Official MCP Registry
Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.
About
Pay-per-call MCP server. $0.03 USDC sends one transactional SMS to a US phone number via x402.
Security Report
This MCP server is well-designed with appropriate security controls for its stated purpose of paid SMS delivery. Authentication is enforced via private key, permissions align with the use case (network calls to SMS service, environment variable for credentials), and code quality is solid. The primary concern is the reliance on user understanding of TCPA compliance—the server correctly delegates this responsibility to the operator via explicit attestation, but a user could misuse the tool despite clear warnings. Supply chain analysis found 2 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.
4 files analyzed · 8 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: BUYER_PRIVATE_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-ultrastarz-x402-sms": {
"env": {
"BUYER_PRIVATE_KEY": "your-buyer-private-key-here"
},
"args": [
"-y",
"x402-sms-mcp"
],
"command": "npx"
}
}
}Reviews
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