Elixir + Phoenix Framework + Guardian + JWT + Comeonin This is a updated guide aimed to support Phoenix 1.3 and Guardian 1.0 Preparing environment We need to generate secret key for development environment. mix phx.gen.secret # ednkXywWll1d2svDEpbA39R5kfkc9l96j0+u7A8MgKM+pbwbeDsuYB8MP2WUW1hf