Ember‑cli‑toolbelts is an Ember CLI addon that provides ready‑made “toolbelt” blueprints for quickly setting up common development configurations—such as Travis CI, performance tooling, mobile support, or updating Ember itself. It’s aimed at Ember developers who want to automate dependency management and feature scaffolding, letting them run commands like `ember toolbelt travis` to add a full set of related files and packages.