sinch-mms
Sinch MMS
Overview
MMS (Multimedia Messaging Service) extends SMS with support for images, video, audio, PDFs and other media. Available in the United States, Canada, and Australia only. This skill covers the MMS channel of the Sinch Conversation API: media types, size limits, channel properties, and transcoding behavior.
Agent Instructions
This skill covers the MMS channel of the Sinch Conversation API and is self-contained for sending MMS — 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, templates, batch sending.
- Other channel skills (sinch-sms, sinch-rcs, sinch-whatsapp) — 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:
- Approach — SDK or direct API (curl,
fetch,requests)? - 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.