text or an AI-drafted message (mode: 'ai' with a prompt). The outbound SMS is persisted and added to the contact's timeline automatically. Requires the user to own at least one active SMS-capable phone number; contact must have a valid phone.Authorization: ********************curl --location '/users/me/contacts//send-sms' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"message": "string",
"agentId": "string"
}'