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mcp/harbor
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x402 sms MCP

v0.1.0

io.github.ultrastarz/x402-sms

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

transport:stdio runtime:npm
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Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add x402-sms -e BUYER_PRIVATE_KEY=<BUYER_PRIVATE_KEY> -- npx -y x402-sms-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.