SDKs

Official client libraries, one per language, coming soon to the package registries:

Language	Library
Node / TypeScript	@sendsignal/sdk
Python	sendsignal-python
Go	sendsignal-go
Ruby	sendsignal-ruby
PHP	sendsignal-php
.NET	sendsignal-dotnet

Each SDK wraps the same REST API documented here; everything the SDKs do, you can do with plain HTTP and your API key. All of them also implement webhook signature verification with the same t=<unix>,v1=<hex> scheme.

Until the packages are published, the Quickstart and every guide on this site show plain-HTTP examples that work with any language.