sv-number/mcp-server ? reverse-engineered prompt

Build me an MCP server for an AI agent that needs to receive SMS verification codes with a private phone number. I want the agent to be able to check the account balance, see which countries and services are available, order a number for a chosen country and service, wait for the SMS code, and then finish or cancel the activation. It should also support requesting another SMS, and include a simple way to generate a TOTP code locally.

Please make it work over stdio so I can plug it into Cursor or Claude Code with a single config entry, and have it read the API key from an environment variable. If the API returns weird status text instead of normal JSON, handle that cleanly and turn it into a useful message. It should be smart about picking services, show delivery stats when available, and keep polling at a sensible pace until the code arrives or the number expires.