A burner-phone backend for AI agents

What it does

SV Number is an MCP server that lets an AI agent rent a temporary phone number in one of 200+ countries, receive an SMS verification code, and return the parsed digits. It wraps a commercial SMS-verification API into nine simple tools—order, poll, cancel, finish—so the agent never touches phone hardware or SDKs.

The interesting bit

The server does the boring glue work that keeps agents from getting stuck: it always injects the lang parameter so pricing stays consistent, translates cryptic API text markers like NO_NUMBERS into actionable sentences, and polls at a sane rate instead of hammering the endpoint. It even ranks fuzzy service matches so discord.com correctly maps to Discord.

Key highlights

• Widest country coverage in its category—200+ markets—and the authors note you can verify the claim yourself with one list_countries call.
• list_services does fuzzy search by domain or name and surfaces delivery-rate statistics and live pool size to help pick a reliable option.
• Includes a local RFC 6238 TOTP generator (totp_code) for authenticator-app flows.
• No free tier; the underlying service requires a funded account and an API key.
• Numbers are strictly temporary and inbound-SMS only—no calls, no outbound texts, no permanent lines.

Caveats

• No free tier or trial; you must fund the account before the tools do anything useful.
• These are disposable numbers, not carrier-grade lines—unsuitable for banking, payments, government IDs, or any conversation that lasts longer than a 20-minute activation window.

Verdict

Worth a look if you are building an agent that needs to register or verify accounts on social platforms and messaging apps. Skip it if you need a persistent number for two-factor auth or voice calls.