Query the active SMS subscriber list to retrieve subscriber IDs and phone numbers. Useful for downstream targeting decisions.

Look up all SMS opt-in keywords configured in the Postscript account. Returns each keyword's ID and reply message. Use the returned ID when calling add_subscriber so the new subscriber is tied to a documented consent flow.

Add a new phone number to the SMS list using a specific keyword ID. The keyword_id ties the subscription to an existing documented consent flow (required for TCPA/CTIA compliance). Returns the created subscriber.

Retrieve recent SMS marketing campaigns and their deployment status. Useful for an AI agent to check what has already been sent before drafting a new one.

Look up audience segments to see how many subscribers each contains. Use BEFORE drafting an SMS blast so the agent can scope the campaign correctly.