Fiber v3 + goauth overview

goauth is framework-agnostic (net/http). For Fiber v3 use the companion module fiberauth — same idea as @auth/express in Auth.js.

flowchart LR
    subgraph Fiber app
        R[Routes /api/*]
        M[fiberauth middleware]
        H[fiberauth.Handler]
    end
    subgraph goauth core
        A[goauth.Auth]
    end
    Client --> H
    H --> A
    R --> M
    M --> A

What fiberauth provides

API	Purpose
fiberauth.Handler(auth)	Mount all /auth/* actions (sign-in, callback, session, token, MFA, …)
fiberauth.GetSession	Load session + forward Set-Cookie
fiberauth.SessionFrom	Read session stored by middleware
fiberauth.Protect	Require login (401)
fiberauth.Guard	Login + custom rules (roles, claims)
fiberauth.HasRole / HasClaim / Condition	Built-in authorizers

Typical app layout

/auth/*          → fiberauth.Handler(auth)     # all goauth actions
/api/public      → no auth
/api/me          → fiberauth.Protect(auth)
/api/admin/*     → fiberauth.Guard(auth, HasRole("admin"))
/login           → your SPA or redirect to Pages.SignIn

Docs in this section

Page	Topic
Installation	go get + minimal main.go
Mounting & auth API	Routes exposed through Fiber
Middleware	Protect, Guard, SessionLoader, JSON errors
Sessions, user & roles	SessionFrom, JWT callback, claims
Sign in (credentials)	Email/password, bearer tokens
OTP & passwordless	Email code login (like “magic code”)
Forgot / reset password	Magic link or OTP reset flow
MFA & trusted devices	Two-step login + deviceId
Redirects & pages	Login redirect, errors, SPA
Full example app	Complete Fiber server

Official Fiber docs: Welcome · fiberauth repo: github.com/izetmolla/fiberauth