Sinch Voice API

Overview

The Sinch Voice API lets you make, receive, and control voice calls programmatically via REST. It uses SVAML (Sinch Voice Application Markup Language) to define call flows through callback events.

Agent Instructions

Before generating code, gather from the user (skip any item already specified in the prompt or context):

1. Approach — SDK or direct API calls (curl/fetch/requests)?
2. Language — for SDK: Node.js, Python, Java, or .NET. For direct API: any language, or curl.

When the user chooses SDK, refer to the sinch-sdks skill for installation and client initialization, then to the bundled examples and SDK reference linked in Links.

When the user chooses direct API calls, refer to the Voice API Reference linked in Links for request/response schemas.

Security: See the Security section below for url fetching policy, handling inbound callback content, and credential handling.