AI agents that live in your text messages

A growing number of AI agents operate directly through text messaging, requiring no separate app download. Users can text these agents to schedule appointments, manage calendars, book reservations, send emails, and more. Notable options include Caddy, which works via iMessage and RCS to organize emails and calendars; Fambot, a family-focused assistant sending nightly summaries over SMS; Folk, available on iMessage, WhatsApp, and Telegram with a private cloud computer; Instinct, valued at $10 billion after a $1 billion funding round; Iris, built on the Hermes agent for iMessage; and Martin, reachable via SMS, WhatsApp, Slack, and email.