Quickstarts

Node.js & TypeScriptThe official server-side SDK — send a published definition with a safe retry key.

Next.jsCall Fabric from a Route Handler and verify a webhook — server-side only.

CLIGenerate a typed catalog of your definition keys with the fabric CLI.

Before you begin

You need Node.js 22 or later, a Fabric application, a sk_test_ secret key, and one published message definition. The examples use the definition key welcome.otp with name and code variables.

The SDK is the only supported integration path. It validates inputs, selects the environment from the key, parses response shapes, retries eligible failures, and exposes typed errors — so you never hand- build a request.