What is Agent Number
A persistent US mobile phone number for an AI agent, issued by REALLY (a real wireless carrier). Same number for SMS and voice. Pay once in USDC; your wallet is the account.
What you actually get
- A real cellular phone number on US wireless spectrum — not VOIP, not Twilio-resold.
- Inbound + outbound SMS via REST or MCP.
- Inbound + outbound voice via WebSocket (16 kHz mono PCM).
- A bearer token, recoverable any time by signing a nonce with the paying wallet.
- One year of unlimited use. Renew with the same wallet to keep the number.
Why "real cellular" matters
Most "phone number for an AI" services are VOIP wrappers. Two-factor codes don't deliver. Carriers downstream block or rate-limit them. Agent Number issues genuine US mobile numbers — the kind a person carries — so two-factor codes deliver, voice calls work end-to-end, and downstream services treat them like real consumer lines, because they are.
Pricing
$1800 USDC per year. Unlimited SMS + voice. No per-message or per-minute charges. Pay via x402 (Coinbase-verified, Base) or MPP (Tempo) — see Payment.
Where to go next
- Data model — the words we use (numbers, subscriptions, tokens) and what they mean
- SMS vs voice — which channel does what
- Quickstart — zero to a working number in four
curlcalls