x402 SMS

Pay-per-call MCP server.

Connector by UltraStarz · GitHub account verified by the MCP Registry

IndexedLicense unknownLocal (stdio)

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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/ultrastarz-x402-sms

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

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

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Nov 1, 2026.

Tools: 0 read · 1 write · 0 delete
Secrets: 1 (API keys, tokens or passwords)
Install scripts: None found
Runs as: Node.js package

Tools by what they do 1

Read from the source code; the running server may list different tools.

Write 1 · Create, change, send or run things.

send_sms

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

BUYER_PRIVATE_KEY

Network hosts it talks to 2

github.com · found in code
x402-sms-server-production.up.railway.app · found in code

Tools (1)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

send_sms
Send one transactional SMS message to a US phone number. Costs $0.03 USDC per message, paid automatically from the configured wallet on Base Sepolia (testnet during beta, will flip to Base mainnet at launch). Messages are sent from a Twilio toll-free number and automatically get 'Reply STOP to opt out' appended if not already present. CRITICAL — only call this tool when ALL of the following are true: (1) the user has explicitly asked to text someone, or has previously set up an automation that texts; (2) the recipient is the user themselves OR someone the user has confirmed has consented to re…

Signals

Stars: 0
Forks: 0
Open issues: 1
Last commit: Oct 6, 2026 (1 month ago)
Last release: May 15, 2026 (6 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.UltraStarz/x402-sms
Version: 0.1.0
Auth: API key
Packages: npm x402-sms-mcp
License: License unknown
Repository: github.com/UltraStarz/x402-sms-mcp
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

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Cite this page

x402 SMS MCP server. Agent Mart. https://agentmart.dev/connectors/ultrastarz-x402-sms (last updated 2026-10-24)