Sinch WhatsApp

Overview

WhatsApp Business messaging is available through the Sinch Conversation API. Send text, media, template, and interactive messages using the unified API format. WhatsApp has strict rules around messaging windows and template approval — this skill covers those channel-specific rules.

Agent Instructions

This skill covers the WhatsApp channel of the Sinch Conversation API and is self-contained for sending WhatsApp messages — 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.
• sinch-provisioning-api — only when provisioning a WhatsApp sender or creating templates programmatically.
• Other channel skills (sinch-sms, sinch-rcs, sinch-mms) — only when the user's task involves that channel. Configuring SMS fallback does not require sinch-sms; everything needed is in this skill.

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.