Sinch 10DLC Registration

Overview

10DLC (10-Digit Long Code) is the required US registration system for Application-to-Person (A2P) SMS on standard 10-digit phone numbers. You must register a brand (the sending company) and a campaign (the messaging use case) with The Campaign Registry (TCR) via Sinch before sending any US A2P SMS.

Agent Instructions

Policy gate sinch-shared-policy@5 (sha256:4864cf0fa8d6): The policy digest below is binding as written. Before implementation or live execution, read the full shared Sinch policy once per conversation — skip it if this exact ID/version/fingerprint is already loaded; read it if the version is newer or the fingerprint differs. This skill's canonical operation routes live in its Agent Instructions and Links sections.

Sinch policy digest (binding):