What does SV Number MCP Server do?

It exposes MCP tools for ordering a temporary phone number, waiting for an SMS verification code, finishing or canceling the activation, checking balance, listing countries and services, requesting another SMS, and generating TOTP codes.

The README shows npx installation with `npx -y sv-number-mcp`. Claude Code users can add it with `claude mcp add sv-number --env SVN_API_KEY=your_key_here -- npx -y sv-number-mcp`.

Does it need an API key?

Yes. The server requires an SVN_API_KEY from the sms-verification-number.com user profile. The README says the account must be funded and there is no free tier for the backend service.

What transport does it use?

The published setup uses stdio through an npx command, which fits local MCP clients that launch servers as subprocesses.

SV Number MCP Server

Name: SV Number MCP Server
Author: SV Number

by SV Number

communitystdionpmVerified

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561stars|5forks

View on GitHub npm Docs

Works withClaude DesktopCursorVS CodeWindsurf

About

MCP server for ordering private phone numbers and reading SMS verification codes from agent clients.

Features

Order private phone numbers for verification tasks in 200+ countries
Poll for SMS codes and return parsed verification codes to the agent
List countries, operators, and services before choosing a number
Finish, cancel, or request another SMS for an activation
Check account balance from an MCP client
Generate RFC 6238 TOTP codes locally without sending the secret upstream
Uses an SVN_API_KEY environment variable and avoids returning the API key in tool output

Use Cases

AI agent builders

Let an agent handle SMS verification flows from Claude Code, Codex, Cursor, Claude Desktop, or another MCP-compatible client.

QA and growth teams

Test signup and onboarding flows that require temporary phone numbers while keeping the steps inside an auditable agent workflow.

Automation engineers

Build repeatable phone-number verification workflows using explicit MCP tools instead of custom API glue code.

What This Server Can Do

MCP servers expose three types of capabilities to AI clients. Here's what SV Number MCP Server supports.

Tools

Supported9 tools

Functions your AI client can call to perform actions — like querying a database, creating a file, or calling an API.

How to use: Tools run automatically when your AI client decides they're needed. Ask your AI assistant to perform a task, and it will invoke the right tool.

Resources

Not available

This server does not expose read-only data resources.

Prompts

Not available

This server does not provide pre-built prompt templates.

For the full list of available tools, resources, and prompts, check the README on GitHub.

Available Tools (9)

get_balance

Return the account balance for the configured API key.

list_countries

List supported countries with IDs and operators.

list_services

Search services or sites by name or domain and return ranked matches with availability and price information.

order_number

Order a private number for a chosen service and country.

wait_for_code

Poll until the SMS code arrives and return the parsed code.

finish_activation

Mark an activation as successful.

cancel_activation

Cancel an activation and request a refund where supported.

request_another_sms

Request one more SMS on the same number.

totp_code

Compute authenticator codes locally using RFC 6238.

Frequently Asked Questions

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