Sinch SMS

Overview

SMS is a core channel of the Sinch Conversation API. The API handles SMS-specific details like encoding detection and message concatenation automatically. This skill covers everything SMS-specific: sender IDs, encoding, message parts, opt-out compliance, and SMS channel properties.

Agent Instructions

This skill covers the SMS channel of the Sinch Conversation API and is self-contained for sending SMS — do not load other skills up front. Load additional skills only when the task actually requires them:

• sinch-conversation-api — only when implementation reaches API-layer work: webhook registration and inbound handling, contacts and conversations, omni-channel template management, batch sending, channel fallback across many channels.
• Other channel skills (sinch-rcs, sinch-whatsapp, sinch-mms) — only when the user's task involves that channel.

Before generating code, confirm two things with the user. Gather each as a separate, open-ended question — do not present a short multiple-choice list:

1. Approach — SDK or direct API (curl, fetch, requests)?
2. Language — Only Node.js, Python, Java, or .NET when using an SDK. Any language or curl when using direct API.

Skip a question only when the answer is unambiguous from the user's prompt or workspace (a Sinch dependency in the project manifest fixes both approach and language; a bare manifest fixes only the language). Do not skip because a default feels reasonable or the request is short. Once both are decided, do not re-gather on follow-up turns unless the user explicitly switches.