Give your agent real phone numbers for SMS, OTP verification, and voice calls via the AgentCall API.
v2.13.0: get_plan + upgrade_to_pro tools so an agent can help its human upgrade (checkout link only, nothing charged until the human completes it, confirm before acting). Every plan_limit_* error carries upgradeUrl + upgradeToolName. Plain outbound calls are Pro only, callers hear a short message when a Free number is out of trial minutes, 3-per-day redial cap per destination. 62 tools.