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An SMS agent holds text-message conversations: it replies, runs actions, remembers the contact between conversations, and closes the session when it’s done.
Lumina handles inbound conversations. For now it cannot start one: you can save an outbound Lumina agent, but it won’t text first.If your use case is sending the first message — campaigns, scheduled reminders — that capability isn’t available yet.
📷 Screenshot needed — the full SMS agent editor, with its three columns.Save to /images/en/sms-agents/editor-overview.png

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What Lumina is

Lumina is Dialtu’s SMS engine. Unlike other channels, Dialtu controls the whole conversation end to end here: the prompt, the model turn, the tools and the history. The carrier only transports the message. In practice that means two things for you:

Contact memory

A Lumina agent does receive the contact’s memory, just like WhatsApp.

Opt-out keywords

Lumina recognises STOP, HELP and START automatically, before the model ever sees the message.

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The editor at a glance

A single screen with three columns, same as the other channels.

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What SMS does NOT have

Worth saying early, because these are real differences from WhatsApp:

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What’s in this section

Create an SMS agent

The minimum fields to get it replying.

Configuration

Channel, schedule, behaviour, memory and outcomes.

Compliance and opt-outs

STOP, HELP, START and A2P 10DLC registration.

Phone numbers

How to get the number the agent needs.